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View Full Version : free extra performance for 7900GTX owners


PaiN
08-01-06, 06:09 PM
I searched and didn't see anything in the forum on this little tid-bit, so here it is.
This is from MaximumPC Aug 2006 "AM2 has Landed" I was able to increase my PCI-e bus on an nf4-SLI with no issues. If a 7900GTX is qualified for 125mhz it should be able to handle it on any mobo that can provide it.

http://home.comcast.net/~moso/images/PCIbusaet.JPG

jAkUp
08-01-06, 06:49 PM
From what I have seen increasing the frequency of the PCIe usually does next to nothing... Definetely interesting though.

rflair
08-01-06, 06:51 PM
Interesting, I'm going to try it next reboot, computers been on 3 weeks now. I wonder if there is any increase anywhere, 3D, HD video playback, maye run higher textures.

PaiN
08-01-06, 07:13 PM
From what I have seen increasing the frequency of the PCIe usually does next to nothing...
...I'd never turn down extra bandwidth, especially for free... I bet there are some situations where its helpful, maybe not in benchmarking but for gaming at max visual quality and high resolutions.

Redeemed
08-01-06, 09:22 PM
Has anybody tried it yet?

J-Mag
08-01-06, 09:24 PM
I know many high end overclockers swear by increasing PCI-E not for extra bandwidth but the increased freq allows the 7900gtxs (only cards I have heard 100% confirmation on) to run at higher core and mem clocks.

ViN86
08-01-06, 09:25 PM
From what I have seen increasing the frequency of the PCIe usually does next to nothing... Definetely interesting though.
its weird though, cause my bro OC'd his PCIe bus on his SLI setup and he got a bunch of extra fps and 3dmarks. maybe it just helps with an SLI setup cause it really utilizes that bandwidth?

PaiN
08-01-06, 11:46 PM
Has anybody tried it yet?
Worked fine on my setup....never tested the performance bene's though

john19055
08-03-06, 02:59 AM
I ran my at 115mhz and could'nt tell that it helped anything.

PaiN
08-05-06, 02:20 PM
just to update, been running 125mhz without issue....I should try and bench it sometime.

snowmanwithahat
08-06-06, 12:23 AM
I searched and didn't see anything in the forum on this little tid-bit, so here it is.
This is from MaximumPC Aug 2006 "AM2 has Landed" I was able to increase my PCI-e bus on an nf4-SLI with no issues. If a 7900GTX is qualified for 125mhz it should be able to handle it on any mobo that can provide it.



that might be fine for the video card since they are pre-approved... however, i'd like to know if the NF4 is approved, obviously the 590 is and running an NF4 out of spec, like any type of overclocking will put it at risk, and from what i've seen in the past, pumping the bus does next to nothing usually, it just runs it out of spec, good lucky though, be careful

Imbroglio
08-06-06, 01:13 PM
i gained ~200 points in 3dmark05 by oc'ing my pcie bus in ntune, but stability soon was more of an issue, i was also running it at 125mhz. like ViN had said, it was probably because i am in sli and it opened up my bus to interact with my cards more freely because i only have a 16 pipe instead of 32.