eVGA Geforce 7800 GTX KO Review

Videocards/VGA Reviews by jmke @ 2006-03-02

The reference 7800GTX 256Mb from nVidia comes with 430Mhz GPU and 1.2Ghz memory clock. EVGA?s 7800GTX KO version has 490Mhz GPU and 1.3Ghz memory clocks; nVidia?s 7800GTX 512Mb does better with 550mhz GPU and 1.7ghz memory, the KO version of EVGA sits in the middle GPU clock wise.

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In the box & ACS3 Cooling

The Box and Goodies:

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Madshrimps (c)


In the box:
  • 2*DVI adapters
  • S-Video Cable
  • VIVO module

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    • Requirements:
    • Minimum of 450W power supply
    • Available 6-pin PCIe connector (converter for molex included with the card)

    The EVGA cooling: ACS3

    EVGA equipped this card with the latest version of their ACS (Asymmetric Cooling System) cooling system, version 3 further offers further improvements, with a copper heatsink covering the hot running GPU its better it’s better than the reference nVidia cooling without adding noise.

    Madshrimps (c)
    You can see the copper from this angled shot


    The ACS3 further adds additional ducts to guide air over the components on the card, small E-style EVGA style cutouts provide more fresh air to the board. Dismantling the ACS3 is strongly discouraged, after looking closer at the mounting method it comes clear that it’s not simply a matter of removing a few screws, they used thermal stickers throughout and it might not be possible to reinstall the cooling correctly once you removed it. For those interested to see what lies beneath the sleek black exterior EVGA has released these 2 diagrams:

    Madshrimps (c)
    Madshrimps (c)


    On an open test bench I measured a maximum GPU temperature of 74°C (ambient 23°C) – while this is certainly not very cool it’s well within safe limits of the GPU, which has higher limit than your CPU. The fan never ramped up its speed, even under load it remained whisper quiet, 35dBA@30cm (ambient noise 32dBA).

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