OCing gfx cards, making performance worse?!?!

potnop · Mar 29, 2007, 08:04 AM

Well I tired Overclocking my Nvidia Riva TNT 2 on my old comp. I ran an old verson of 3D mark. I think it was 2001. My card was way too outdated for 2001 since a lot of the tests ran very slowly and things like bump mapping weren't even supported. And for some reason when I was overclocking the card I was getting worse results. I then DLed 3D mark 2000 which had the tests running more smoothly. I never really could tell waht my score was after Overclocking on that program because the tests seemed to quit to the desktop in the middle of running, (maybe overheating?)

Anotehr thing, I also tried overclocking my ATI radeon 9250 to play Quake 4 on. Kinda hard, but I managed to get it to run around 20-40 FPS which is not bad if I say so myself, considering the fact that it doesn't meet min system specs. I even managed to get the greenness to go away without switching r_renderer to arb. I looks like if I set it to best whcih is waht normally causes the green it selects r200. It actually runs very slow on arb. Without arb though the lights seem to be slightly rainbowy sometimes but I hardly notice it.

Anyway, that was off topic... I overclocked it from around 240 Ghz to 280 Ghz or soemthing like that and it seemed to run Quake 4 worse. I noticed the logo movies in the beginning of the game ran at 10 FPS with OCing. And 13 FPS without. I don't know why it plays them so slow in the first place, but that's one noticeable spot. On ATI Radeon Xpress 200 it plays the logos at around 60 FPS like it should, but the game itself runs around 10 FPS which is unplayble so I don't play it on the Xpress card. Generally gameplay runs the same. I remember how the FPS is in one area with overclocking and without and they were the same.

Anyway, am I doing something wrong? Is it oveheating or something? How am I getting worse performance or no improvement at all with Overclocking?

H3X4D3C1M4L · Apr 8, 2007, 07:16 PM

I think the problem is due to the fact that the card is making errors in calculation due to the higher clock speed and it has to sit there and recalculate things, thus slowing down the process.

IMO best to leave it at stock

GutterPunk · Apr 10, 2007, 08:44 PM

Quote:

Originally Posted by H3X4D3C1M4L

I think the problem is due to the fact that the card is making errors in calculation due to the higher clock speed and it has to sit there and recalculate things, thus slowing down the process.

IMO best to leave it at stock

its the same when people pull slow times running superpi at high clocks

Mar 29, 2007, 08:04 AM	#1
potnop HardwareHeaven Newbie Join Date: Mar 2007 Posts: 16 Rep Power: 0	OCing gfx cards, making performance worse?!?! Well I tired Overclocking my Nvidia Riva TNT 2 on my old comp. I ran an old verson of 3D mark. I think it was 2001. My card was way too outdated for 2001 since a lot of the tests ran very slowly and things like bump mapping weren't even supported. And for some reason when I was overclocking the card I was getting worse results. I then DLed 3D mark 2000 which had the tests running more smoothly. I never really could tell waht my score was after Overclocking on that program because the tests seemed to quit to the desktop in the middle of running, (maybe overheating?) Anotehr thing, I also tried overclocking my ATI radeon 9250 to play Quake 4 on. Kinda hard, but I managed to get it to run around 20-40 FPS which is not bad if I say so myself, considering the fact that it doesn't meet min system specs. I even managed to get the greenness to go away without switching r_renderer to arb. I looks like if I set it to best whcih is waht normally causes the green it selects r200. It actually runs very slow on arb. Without arb though the lights seem to be slightly rainbowy sometimes but I hardly notice it. Anyway, that was off topic... I overclocked it from around 240 Ghz to 280 Ghz or soemthing like that and it seemed to run Quake 4 worse. I noticed the logo movies in the beginning of the game ran at 10 FPS with OCing. And 13 FPS without. I don't know why it plays them so slow in the first place, but that's one noticeable spot. On ATI Radeon Xpress 200 it plays the logos at around 60 FPS like it should, but the game itself runs around 10 FPS which is unplayble so I don't play it on the Xpress card. Generally gameplay runs the same. I remember how the FPS is in one area with overclocking and without and they were the same. Anyway, am I doing something wrong? Is it oveheating or something? How am I getting worse performance or no improvement at all with Overclocking?

Apr 8, 2007, 07:16 PM	#2
H3X4D3C1M4L DriverHeaven Extreme Member Join Date: May 2005 Posts: 6,794 Rep Power: 0	I think the problem is due to the fact that the card is making errors in calculation due to the higher clock speed and it has to sit there and recalculate things, thus slowing down the process. IMO best to leave it at stock