GeForce 8800 Roundup: The Best of the Best
by Josh Venning on November 13, 2006 11:04 AM EST- Posted in
- GPUs
Heat
To test the temperature level of these cards, much like for power consumption, we took temperature readings off the cards while the system was idle and also while running benchmarks to stress the GPUs.
Generally, all of the 8800 GTXs show heat levels that are very similar; around 62 to 67 degrees Celsius when idle and 81 to 87 degrees Celsius under load. The exceptions of course are the XFX GeForce 8800 GTS and the Sparkle Calibre 8800 GTX. Interestingly, this test is where the Calibre 8800 GTX's unique heat sink design really makes an impact. The temperature levels of this card under load are even lower than the XFX 8800 GTS by over ten degrees. This is somewhat perplexing considering that our Sparkle Calibre 8800 GTX sample didn't overclock very well compared to the other 8800 GTXs. Also keep in mind that although the peltier cooler keeps the GPU running at lower temperatures, the peltier element itself does contribute heat to the system, so this card won't necessarily keep your system cooler, just your GPU.
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JarredWalton - Monday, November 13, 2006 - link
Derek already addressed the major problem with measuring GPU power draw on its own. However, given similar performance we can say that the cards are the primary difference in the power testing, so you get GTX cards using 1-6w more power at idle, and the Calibre uses up to 15W more. At load, the power differences cover a 10W spread, with the Calibre using up to 24W more.If we were to compare idle power with IGP and an 8800 card, we could reasonably compare how much power the card requires at idle. However, doing so at full load is impossible without some customized hardware, and such a measurement isn't really all that meaningful anyway if the card is going to make the rest of the system draw more power anyway. To that end, we feel the system power draw numbers are about the most useful representation of power requirements. If all other components are kept constant on a testbed, the power differences we should should stay consistent as well. How much less power would an E6400 with one of these cards require? Probably somewhere in the range of 10-15W at most be likely.
IKeelU - Monday, November 13, 2006 - link
Nice roundup. One comment about the first page, last paragraph:"HDMI outputs are still not very common on PC graphics cards and thus HDCP is supported on each card."
Maybe I'm misinterpreting, but it sounds like you are saying that HDCP is present *instead* of HDMI. The two are independent of each other. HDMI is the electrical/physical interface, whereas HDCP is the type of DRM with which the information will be encrypted.
Josh Venning - Monday, November 13, 2006 - link
The sentence has been reworked. We meant to say HDCP is supported through DVI on each card. Thanks.TigerFlash - Monday, November 13, 2006 - link
Does anyone know if the Evga WITH ACS3 is what is on retail right now? Evga's website seems to be the only place that distinguishes the difference. Everyone else is just selling an "8800 GTX."Thanks.
Josh Venning - Monday, November 13, 2006 - link
The ACS3 version of the EVGA 8800 GTX we had for this review is apparently not available yet anywhere, and we couldn't find any info on their website about it. Right now we are only seeing the reference design 8800 GTX for sale from EVGA, but the ACS3 should be out soon. The price for this part may be a bit higher, but our sample has the same clock speeds as the reference part.SithSolo1 - Monday, November 13, 2006 - link
They have two different heat sinks so I assume one could tell by looking at the product picture. I know a lot of sites use the product picture from the manfacture's site but I think they would use the one of the ASC3 if that's the one they had. I also assume they would charge a little more for it.imaheadcase - Monday, November 13, 2006 - link
Would love to see how these cards performance in Vista, even RC2 would be great.I know the graphics drivers for nivdia are terrible, i mean terrible, in vista atm but when they at least get a final out for 8800 a RC2 or a Vista final roundup vs winxp SP@ would be great :D
DerekWilson - Monday, November 13, 2006 - link
Vista won't be that interesting until we see a DX10 driver from NVIDIA -- which we haven't yet and don't expect for a while. We'll certainly test it and see what happens though.imaheadcase - Monday, November 13, 2006 - link
Oh the current drivers for the 8800 beta do not support DX10? Is that the new detX drivers I read about Nvidia working on are for?peternelson - Saturday, November 25, 2006 - link
I'd be interested to know if the 8800 drivers even support SLI yet? The initial ones I heard of did not.