Document:

<PAGE>
                                                                 EXHIBIT 10.24.1
                                                CONFIDENTIAL TREATMENT REQUESTED

                         [PRODUCT PRICING FOR SAMSUNG]

                                                             [Date: Oct/31/2001]

Pricing for Probecards ordered in 12 months period starting the execution of the
Probecard purchase agreement shall be as follows:

1.    * * *                                : * * *

2.    Unite Price                          : * * *

3.    Product                              : * * *

4.    Order due date                       : * * *

5.    Delivery due date                    : * * *

6.    Minimum Q'ty/New-design:

           6-1. * * * for * * *

           6-2. * * * (* * *) for * * *.

           6-3. * * *: * * * (* * *-will be credit with the re-order)

7.    * * * : * * * will be * * * to get * * * information at SEC.

8.    Signed: Agreed as above for * * * and will be applied in the future PPA.

FormFactor, Inc.                                 Samsung Electronics Co., Ltd.

By:  /s/ K.K. Kim                              By:  /s/ S.M. Lee
    -----------------------------                  -----------------------------
Date:         Oct/31/2001                      Date:          10/31/2001
      ---------------------------                    ---------------------------

                             FormFactor Confidential

* * * Confidential treatment has been requested for portions of this exhibit.
The copy filed herewith omits the information subject to the confidentiality
request. Omissions are designated as * * *. A complete version of this exhibit
has been filed separately with the Securities and Exchange Commission.
<PAGE>
                                                                      Appendix 1

                           Product Pricing for Samsung

Pricing Terms:

1.    Pricing for probecards delivered in a 1 year period starting from the
      execution of the Probecard Purchase Agreement shall be as follows:

<TABLE>
<CAPTION>
                   Product Type                  Unit Price                NRE
<S>                                              <C>                     <C>
      * * *                                       $  * * *               $ * * *
      * * *                                       $  * * *               $ * * *
      * * *                                       $  * * *               $ * * *
</TABLE>

2.    Contract Term and Condition:

      2.1 Contract term for one year shall be from January 2002 to December 2002

      2.2 The * * * is guaranteed

3.    Price Condition:

      3.1 A * * * shall apply to the table above should a DUT exceed * * *
      (* * *)

      3.2 Should Samsung purchase a quantity of * * * of a new design (* * *),
      the * * * shall apply. * * * re-orders quantity is * * * for next new
      design for * * * of new design. Should the New Design be a * * *, the
      * * * shall be * * *.

4.    Repair Condition:

      4.1 * * * is included on above price. * * *

      4.2 VENDOR will assign a * * *.

5.    Payment terms, * * *, F.O.B. Livermore, CA, Payable in US Dollars

6.    Both companies agree to Order - Cancellation Policy (Attached)

7.    Both companies will cooperate together to improve relationship.

8.    FFI and Samsung shall issue a joint press release about the existence of
      this contract.

9.    Signed:

FormFactor, Inc.                             Samsung Electronics Co., Ltd.

By:  /s/ S.M. Kim                           By:  /s/ [illegible]
     --------------------------                  --------------------------
Date:  1/10/2002                            Date:   1/10/2002
      -------------------------                   -------------------------

              Proprietary Data, BUYER and FormFactor Confidential
                              All rights reserved

                                    page 1/1

* * * Confidential treatment has been requested for portions of this exhibit.
The copy filed herewith omits the information subject to the confidentiality
request. Omissions are designated as * * *. A complete version of this exhibit
has been filed separately with the Securities and Exchange Commission.

<PAGE>
                                                                      Appendix 1

                           PRODUCT PRICING FOR SAMSUNG

Pricing Terms:

1.    Pricing for probecards delivered in a 1 year period starting from the
      execution of the Probecard Purchase Agreement shall be as follows:

<TABLE>
<CAPTION>
                   Product Type               Unit Price       NRE        Credit Condition
<S>                                           <C>            <C>         <C>
      * * *                                      $ * * *     $ * * *     Total qty = * * *
      * * *                                      $ * * *     $ * * *     Total qty = * * *
      * * *                                      $ * * *     $ * * *     Total qty = * * *
      * * *                                      $ * * *     $ * * *     Total qty = * * *
</TABLE>

2.    Contract Term and Condition:

      2.1   Contract term for one year shall be from December 2002 to December
            2003.

3.    Price Condition:

      3.1   A * * *% premium shall apply to the table above should a DUT exceed
            * * * (* * *), and * * * a DUT exceed * * *.

      3.2   For * * *, Should Samsung purchase a quantity of * * * of a new
            design (* * *), the * * * shall apply.

            * * * will be credit for next new design in case purchasing * * * on
            * * *.

            Should the * * * be a * * *, the * * * shall be charged at a price
            of $* * *.

      3.3   For more than * * *, Should Samsung purchase a quantity of * * * of
            a new design (* * *), the * * * shall apply. * * * will be credit
            for next new design in case purchasing * * * on * * *.

            Should the * * * be a * * *, the * * * shall be charged at a price
            of $* * *.

      3.4   For * * * and * * * with * * *

      3.5   * * * is provided * * * at FFIK if * * * of PC purchased.
            * * * is provided * * * at FFIK if * * * of PC purchased.
            * * * is provided * * * at FFIK if * * * of PC purchased.

      3.6   Released product (* * * or * * *),(* * * or * * *),(* * *) is
            applied on * * *, and * * * is released when * * * is * * *.

      3.7   Recycling program is applied for purchasing.

4.    Repair Condition:

      4.1   * * * is included on above price. (Attached)

      4.2   VENDOR will assign a * * *.

5.    Payment terms, Net * * *, F.O.B. Livermore, CA, Payable in US Dollars.

6.    Both companies agree to Order Cancellation Policy (Attached).

7.    Both companies will cooperate together to improve relationship.

8.    FFI and Samsung shall issue a joint press release about the existence of
      this contract.

--------------------------------------------------------------------------------
              Proprietary Data, BUYER and FormFactor Confidential
--------------------------------------------------------------------------------
                              All rights reserved
                                    page 1/2

* * * Confidential treatment has been requested for portions of this exhibit.
The copy filed herewith omits the information subject to the confidentiality
request. Omissions are designated as * * *. A complete version of this exhibit
has been filed separately with the Securities and Exchange Commission.
<PAGE>
9.    Signed:

FormFactor, Inc.                            Samsung Electrics Co., Ltd.

By:    /s/ [illegible]                      By:    /s/ [illegible]
    --------------------------------            --------------------------------

Date:  '03/01/22                            Date:  '03/01/22
      ------------------------------              ------------------------------

       /s/ Peter B. Mathews
------------------------------------
       VP-Worldwide Sales
------------------------------------
       Jan. 22, 2003
------------------------------------

--------------------------------------------------------------------------------
              Proprietary Data, BUYER and FormFactor Confidential
--------------------------------------------------------------------------------
                              All rights reserved
                                    page 2/2<PAGE>
                                                                 EXHIBIT 10.25.1
                                                CONFIDENTIAL TREATMENT REQUESTED

                               AMENDMENT NO. R TO

      INTEL CORPORATE EQUIPMENT AND SERVICE PURCHASE AGREEMENT NO. C-05673

                                    BETWEEN

                     INTEL CORPORATION AND FORMFACTOR, INC.

For valuable consideration, the receipt and sufficiency of which the parties
hereby acknowledge, Intel Corporation ("Buyer") and FormFactor, Inc. ("Seller")
hereby amend the above referenced Intel Corporation Purchase Agreement No.
C-05673 (the "Agreement") as set forth hereafter.

1.    EFFECTIVE DATE.

            The Effective Date of this amendment ("Amendment") shall be 2-4-02.

2.    DEFINITIONS.

            Unless provided otherwise in this Amendment, each term appearing in
            this Amendment shall have the same meaning as given in the
            Agreement.

3.    AMENDMENTS.

            By executing this Amendment, Buyer and Seller are amending the
            Agreement to add the terms and conditions applicable to Flash
            Products as set forth in Exhibits A attached hereto and incorporated
            herein by this reference.

4.    LEGAL EFFECT ON AGREEMENT.

            As amended by this Amendment, all provisions of the Agreement shall
            remain in full force and effect. In the event of a conflict between
            this Amendment and the Agreement, this Amendment shall take
            precedence.

INTEL CORPORATION                           FORMFACTOR, INC.

By: /s/ Bill deDiego                        By: /s/ David Browne
    --------------------------------            --------------------------------
        Bill deDiego                                David Browne
------------------------------------        ------------------------------------
(Printed Name)                              (Printed Name)

        Commodity Manager                           Technical Sales Manager
------------------------------------        ------------------------------------
(Title)                                     (Title)

        5-7-02                                      5/22/02
------------------------------------        ------------------------------------
(Date)                                      (Date)

* * * Confidential treatment has been requested for portions of this exhibit.
The copy filed herewith omits the information subject to the confidentiality
request. Omissions are designated as * * *. A complete version of this exhibit
has been filed separately with the Securities and Exchange Commission.
<PAGE>
                                   EXHIBIT A

                                 FLASH PRODUCTS

1.    The prices in Tables 1 and 2, below, apply to all purchase orders
      submitted by Buyer to Seller for * * * and * * * Flash memory probe cards
      meeting the following requirements: (i) pitch * * *um; (ii) pad size * *
      *um; (iii) maximum of * * * pads per die; (iv) use of * * * (* * * inches)
      or * * * (* * * inches) space transformer; and (v) technical
      specifications in Buyer Procurement Document * * *, or as otherwise
      mutually agreed upon by Buyer and Seller ("Flash SIU").

                                    TABLE 1
                                 * * * Pricing

<TABLE>
<CAPTION>
      Quantity          Base Prices     * * * After     * * * After * * *     After * * * cards or
  Per Design Tier                       * * * Cards           Cards              as of 1/1/2003
<S>                     <C>             <C>             <C>                   <C>
    First * * *            * * *           * * *              * * *                   * * *
* * * Through * * *        * * *           * * *              * * *                   * * *
* * * Through * * *        * * *           * * *              * * *                   * * *
* * * Through * * *        * * *           * * *              * * *                   * * *
       >* * *              * * *           * * *              * * *                   * * *
</TABLE>

                                    TABLE 2
                                 * * * Pricing
<TABLE>
<CAPTION>
                       Quantity                   For 2002
                   Per Design Tier
<S>                                               <C>
                     First * * *                    * * *
                 * * * Through * * *                * * *
                 * * * Through * * *                * * *
                 * * * Through * * *                * * *
                        >* * *                      * * *
</TABLE>

            (a)   In addition to the price schedules of Tables 1 and 2, Seller
                  will provide a * * * on * * *, respectively; provided,
                  however, that in all events the applicable * * * will not be
                  implemented prior to * * *, even if * * * exceed the * * *
                  threshold.

            (b)   Seller shall provide an * * * on * * * exceed * * *,
                  respectively.

            (c)   Seller shall provide a * * * on * * *.

2.    The prices for Flash SIU purchase orders submitted by Buyer to Seller that
      do not meet all of the following requirements: (i) pitch * * *um; (ii) pad
      size * * *um; (iii) maximum of * * * pads per die; (iv) use of * * *; and
      (v) FFI design rules, will be quoted on a case-by-case basis.

3.    The quantities called out in Table 1 and Table 2, above, are for each
      different new Flash SIU design. That is, the quantities of a first article
      design and re-orders of the same design may be combined within the
      "Quantity Per Design Tier" when calculating whether a particular
      identified quantity level is met. By way of example, if a first article
      design is placed for * * * cards, and a re-order is subsequently (i.e., on
      any day subsequent to the day the first article design order was placed)
      placed for * * * cards, the first article design order shall be subject to
      the pricing in the "First * * *" quantity level, and then * * * of the
      cards in the reorder will be subject to the pricing in the "First * * *"
      quantity level, and the remaining * * * cards in the reorder will be
      subject to the pricing in the "* * * through * * *" quantity level. In no
      event will the pricing of a first article design order, or a subsequent
      re-order, be revisited or revised in view of subsequent purchases or
      demand,

* * * Confidential treatment has been requested for portions of this exhibit.
The copy filed herewith omits the information subject to the confidentiality
request. Omissions are designated as * * *. A complete version of this exhibit
has been filed separately with the Securities and Exchange Commission.
<PAGE>
      even if a significant volume purchase order is ultimately placed by Buyer.
      The quantity of one design cannot be added to the quantity of another
      design to use the prices in each Quantity Per Design Tier.

4.    The prices shown in Tables 1 and 2, and paragraphs 1.a) through l.c) will
      not be combined with any other pricing modifications that the parties may
      negotiate in the future and are valid through * * *.

5.    For Flash SIU purchase orders with more than * * * cards, all cards will
      be priced against the applicable cumulative quantity price.

6.    A minimum order value of * * * is required for each new * * *.

7.    The NRE for each new * * * shall comply with Table 3, below.

                                    TABLE 3
                         NRE for New Flash SIU Designs

<TABLE>
<CAPTION>
                      Design requirements                                        NRE
<S>                                                                             <C>
 Only requires a new PCB or a modification to an existing PCB                   * * *
                    Only requires a new MLC                                     * * *
                        New MLC and PCB                                         * * *
</TABLE>

8.    If Seller is able to reuse previous NRE work, the NRE will be quoted on a
      case-by-case bases.

9.    Table 4, below, sets forth the * * * that will apply to * * * by Seller as
      indicated below, if any, of only the following probe cards: * * *.

                                    TABLE 4
                                     * * *

<TABLE>
<CAPTION>
                        Days * * *                * * *
<S>                                               <C>
                           * * *                  * * *
                           * * *                  * * *
                           * * *                  * * *
                           * * *                  * * *
                           * * *                  * * *
</TABLE>

      (a) The * * * is taken from the then-applied price for the card.

      (b) The * * * is taken on the card(s) that are * * *, and not on all cards
          within the purchase order.

      (c) No * * * will apply:

            (i)   in the event that Seller's * * * is * * * based upon a * * *.

            (ii)  if the cause of * * * is due, in whole or in part, to a cause
                  other than Seller's (or Seller's suppliers or vendors) own
                  * * *.

            (iii) for designs that do not meet the specification requirements
                  for the established pricing tables.

10.   First Article Lead-times for * * * probe cards that meet the requirements
      set forth in Paragraph 1, above, shall be:

            * * * weeks as of * * *

            * * * weeks as of * * *

            * * * weeks as of * * *

      Lead-time is measured from the time that FFI receives both the complete
      data sheet and specifications for the particular * * * probe card being
      ordered, and the purchase order that meets the minimum order requirement.
      Lead-times exclude scheduled vendors and FFI holidays. Seller's annual
      Holiday schedule will be provided to Intel promptly upon Seller finalizing
      the same for any given year during the term. The additional Lead-time due
      to vendor and FFI holidays will not exceed * * *. Seller is currently
      developing its * * * probe cards. In the event that Buyer qualifies
      Seller's * * * probe cards, Seller will offer a * * * first article lead
      time for up to * * * probe cards.

* * * Confidential treatment has been requested for portions of this exhibit.
The copy filed herewith omits the information subject to the confidentiality
request. Omissions are designated as * * *. A complete version of this exhibit
has been filed separately with the Securities and Exchange Commission.
<PAGE>
11.   Reorder Lead-times for * * * probe cards that meet the requirements set
      forth in Paragraph 1, above, shall be:

            (i)   * * * weeks for forecasted orders

            (ii)  * * * weeks for forecasted orders where FFI has required MLC
                  inventory in house

            (iii) * * * weeks for unforecasted orders without MLC inventory at
                  FFI

* * * Confidential treatment has been requested for portions of this exhibit.
The copy filed herewith omits the information subject to the confidentiality
request. Omissions are designated as * * *. A complete version of this exhibit
has been filed separately with the Securities and Exchange Commission.

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