page_title: Tseng Labs ET4000
section_title: ET4000/W32
hierarchical_section_title: Tseng Labs ET4000 / Models / ET4000/W32
caption_attribution_description: العربية: بطاقة عرض مرئي. English: Diamond Stealth 32 VLB. Scanned card.
context_page_description: The Tseng Labs ET4000 was a line of SVGA graphics controller chips during the early 1990s, commonly found in many 386/486 and compatible systems, with some models, notably the ET4000/W32 and later chips, offering graphics acceleration. Offering above average host interface throughput coupled with a moderate price, Tseng Labs' ET4000 chipset family were well regarded for their performance, and were integrated into many companies' lineups, notably with Hercules' Dynamite series, the Diamond Stealth 32 and several Speedstar cards, and on many generic boards.
context_section_description: Hardware acceleration via dedicated BitBLT hardware and a hardware cursor sprite was introduced in the ET4000/W32.  The W32 offered improved local bus support along with further increased host interface performance, but by the time PCI Windows accelerators became commonplace, high host throughput was no longer a distinguishing feature.  Nevertheless, as a mid-priced Windows accelerator, the W32 benchmarked favorably against competing mid-range S3 and ATI chips. Configured with 32-bit asynchronous EDO/FPM (70 ns) DRAM, the W32 could sustain a transfer speed of ~56 MB/s.
caption: Diamond Stealth 32 VLB with ET4000/W32p
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