Comments on: Overclocking ATI Radeon cards in Linux

By: Flashing a HD2900PRO to XT - Overclock.net - Overclocking.net

Flashing a HD2900PRO to XT - Overclock.net - Overclocking.net — Fri, 11 Jan 2008 14:46:54 +0000

[…] if rovclock works with current GPU hardware. This seems to be a guide to rovclock. __________________ Don’t get a PS3 if you plan on using the […]

By: damir

damir — Mon, 31 Dec 2007 12:15:49 +0000

Hi! I use rovclock, only not for overclocking but for ‘underclocking’, since my card is defected and only runs properly on lower freqencies.
The problem is that on every system reboot the card’s original frequencies are restored, which is bad since when i get to console to run rovclock, the card messes up pretty badly.
I need to know if it’s possible to save card frequencies, so those are used on computer startup instead of original ones.

Thank you.

By: Silvio

Silvio — Mon, 09 Jul 2007 15:32:43 +0000

glxgears isn’t a benchmark tool

By: owen

owen — Mon, 02 Apr 2007 00:34:52 +0000

stock 380mhz core and 340mhz

By: owen

owen — Mon, 02 Apr 2007 00:31:21 +0000

hiya
9800 pro saphire - stock
Found ATI card on 01:00, device id: 0×4e48
I/O base address: 0xe000
Video BIOS shadow found @ 0xc0000
Reference clock from BIOS: 27.0 MHz
Memory size: 131072 kB
Memory channels: 2, CD,CH only: 0
tRcdRD: 5
tRcdWR: 3
tRP: 5
tRAS: 10
tRRD: 4
tR2W-CL: 3
tWR: 3
tW2R: 2
tW2Rsb: 1
tR2R: 2
tRFC: 17
tWL(0.5): 3
tCAS: 4
tCMD: 0
tSTR: 0
XTAL: 27.0 MHz, RefDiv: 12

Core: 432.0 MHz, Mem: 371.25 MHz

but - i think it is broken now. hehe

By: Anonymous

Anonymous — Mon, 19 Mar 2007 14:39:00 +0000

Alex,

it’s a 200m, it’s not much of a gaming chip at all. In Windows I get only 20fps in WoW on average. I wouldn’t increase the core at all, simply because, if it overheats and you damage it, there’s no replace the graphics card, it’s built into the motherboard of your laptop. You’re stuck buying a whole new one. I’ve never noticed much difference overclocking my 200m, and with it being my only PC, i’d rather not shorten the chips lifespan by or risk damaging it by overclocking.

For other cards in PCs, this article is great. Thanks for the info.

By: Anonymous

Anonymous — Mon, 19 Mar 2007 13:15:00 +0000

before rovclock ./glxgears
6672 frames in 5.0 seconds = 1323.513 FPS
7100 frames in 5.1 seconds = 1397.675 FPS
7080 frames in 5.0 seconds = 1404.010 FPS
7080 frames in 5.1 seconds = 1394.494 FPS
7048 frames in 5.1 seconds = 1388.388 FPS

after rovclock -c 315
6892 frames in 5.0 seconds = 1365.670 FPS
7200 frames in 5.1 seconds = 1418.618 FPS
7080 frames in 5.1 seconds = 1398.697 FPS
6960 frames in 5.0 seconds = 1389.242 FPS
7046 frames in 5.0 seconds = 1407.994 FPS

well it starts with higher frame rate... but then drops and I don't notice any significant performance change... will it be risky to try and increase it even higher then 315 it used to be 300...?

By: Alex

Alex — Mon, 19 Mar 2007 12:59:00 +0000

You could increase the core clock but try it slow, with 5-10MHz increases at a time and run glxgeers to see if theres any difference in performance.

By: Anonymous

Anonymous — Sun, 18 Mar 2007 13:46:00 +0000

./rovclock -i
Found ATI card on 01:05, device id: 0x5a62
I/O base address: 0x5800
Video BIOS shadow found @ 0xc0000
Reference clock from BIOS: 14.32 MHz
Memory size: 15360 kB
Memory channels: 2, CD,CH only: 1
tRcdRD: 4
tRcdWR: 5
tRP: 8
tRAS: 8
tRRD: 8
tR2W-CL: 1
tWR: 1
tW2R: 7
tW2Rsb: 0
tR2R: 3
tRFC: 13
tWL(0.5): 0
tCAS: 3
tCMD: 0
tSTR: 1
XTAL: 14.32 MHz, RefDiv: 6

Core: 300.72 MHz, Mem: 0.0 MHz

so should I adjust it if its using shared memory...? (I don't know much about this but would like faster performance for my card)
can you perhaps suggest adjust settings for me?

By: Elez J. Shenhar

Elez J. Shenhar — Sun, 18 Mar 2007 12:36:00 +0000

It probably means your Radeon is using shared memory, meaning it’s using the system’s RAM since it has no RAM of its own…
That’s just a guess.