ATI's Catalyst 3.8 Drivers: ATI Sanctioned Overclocking
by Derek Wilson on October 8, 2003 3:02 PM EST- Posted in
- GPUs
Turning up the Heat
With any system that involves overclocking (factory regulated or otherwise), we are going to want to know it’s stable. To try to push the system, we ran the Final Fantasy XI benchmark on a loop for about 2 hours, followed by a run of X2 at the highest settings possible, then we hit it with GunMetal and finished off with TRAOD.
Tomb Raider is our most intensive test here, as when all the options are set all the way up, with no compression on anything, 6x AA, at 1800x1440 we squeeze out just about 9 frames per second.
Everything ran smoothly and beautifully. There were no stability issues or problems with the graphics.
Of course, that brings us to the next question we have to ask. Since the card overclocks itself based on heat, how does it respond when we heat it up?
To test this, we ran our "kill -9" TRAOD test a couple times to raise the temperature of the card as high as we know how to get it without a blow torch. We then reran the Aquamark3 and Unreal benchmarks. Here's what we saw:
The Aquamark3 score dropped from 47.62 to 46.78
The Unreal score dropped from 135.42 to 132.47
Of course, the performance should never drop below that of the stock clock speed, as the chip will never clock it self that lower than that. What this does mean is that as you are playing a graphically intensive game, your cards performance increase from overdrive will degrade over time.
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Anonymous User - Thursday, October 9, 2003 - link
so... 50 and 51 ... do you play your games for 10 minutes, then turn off the computer to let it cool down so you can get better fps? hell no. you play and play and play till yer done.doing all these benchmarks without letting the card cool down (whether it shows the 3.8 full potential or not) is more like what users will experience on their systems. That makes this data more useful to me than anything else they could have done.
crazy ati fanbois
Anonymous User - Thursday, October 9, 2003 - link
I'm with 50. He is right.Anonymous User - Thursday, October 9, 2003 - link
trying to test a temp related mod without controlling temp in the case is just assinine. This proves absolutely nothing. They themselves said they did not allow cooling between tests so they don't know how the overdrive was working. I would be more impressed with just the change in speed numbers than the fps. That would at least tell us whether the overclocking was used throughout the test and not shut off after the card got hot on the 2nd benchmark. The test had no control basis and therefore all the data is trash.Anonymous User - Thursday, October 9, 2003 - link
when the 9600 XT is going to be realased, i'm waiting for itAnonymous User - Thursday, October 9, 2003 - link
In your discussion of image quality, I don't seea comment on HALO. Yet on my PC (P4C 2.8,
Radeon 9800 PRO, Catalyst 3.6) I get clear drawing
errors. Looking at the sky in any outdoor scene in
level 5 or 8, it shows just a gaping hole which
should've been obscured by fog. More subjectively,
the fog in the swamps at the start/end of level 6
also doesn't work as well as on the XBOX.
What are the experiences of people with different
hardware/drivers?
Anonymous User - Thursday, October 9, 2003 - link
I dont see the overdrive tab, is this only visible with 9800pro etc.My card is a 9500pro!!
Anonymous User - Thursday, October 9, 2003 - link
... so they will only allow the Mhz, where every card works?Anonymous User - Thursday, October 9, 2003 - link
maybe we are gonna see unofficial moded versions of these drivers, with the overclocking limit removed :d . ATI just cant allow this difference between the users cards, when one has a "overclocker" card and gets his 10% and the other has something "allergic to speed" card lol and gets nothing. ATI just cant make the speed of the card luckAnonymous User - Thursday, October 9, 2003 - link
I'm disappointed that Anand didn't try to find out why overdrive didn't produce better figures.Overdrive might not overclock as much as some people want, but it should still give more impact than just 0,5fps.
Since the 9800XT is mainly an overclocked 9800Pro we should be able to accurately estimate the impact of overdrive on the 9800XT.
I suspect that we would get far better numbers if Anand had used 1024*768 instead of 1600*1200 4xAA.
Afaik overdrive only overclocks the GPU and not the memory. At 1600*1200 you are more likely to run into a memory bandwith limited situation. (Especially with all those DX8 games)
In such a situation it is logical that overdrive won't give any large increase in fps.
The other explanation is that the air termperatuur in the computer case Anand uses was very high and therefor overdrive was not able to overclock much.
In either case it is a shame that Anandtech didn't do anything at all to discover where the disappointing results came from.
(I hope nobody here actually thinks that ATI would go through the trouble of creating overdrive when it would only gain 0,5 fps)
Anonymous User - Thursday, October 9, 2003 - link
this is getting way too geeky... Anand, you are indeed the master geek. I mean in this in a good way... or am I? hahaha hust kidding. You guys sure have a lot of patience. Incredible!