7900gtx oc's ONLY

[madgravity34]

I know there is a thread for listing 7900gtx/7900gt oc's but for some reason hardly anyone posted anything about the gtx's and rather everyone is posting about the 7900gt's and its respective vmods.

I am looking into upgrading (if possible) and was trying to decide what brand is best and if its worth it to buy and pre-oc'ed card.

So please list the following for your 7900gtx:

Brand:
Cooling:
Overclock:
Core/Mem Voltage:

And list and 3mark scores if you want. Your help is much appreciated

[Indyxc]

Seems like no one here owns a GTX, which is odd, because this is xtremesystems.org.

Anyway, may I suggest we break it down like this, and add some definitions.


Brand: XFX 7900 GTX Extreme (675/850)
Cooling: Stock
Core Overclock: 720
Mem Overclock: 845
Core/Mem Voltage:Stock

Artifact Free?: These clocks are my max artifact free overclocks in battlefield 2. Unfortuantly for battlefield 2 not to artifact I had to lower the memory speed below what XFX rated it at. Memory runs 875 in most other games no problem it seems.

One thing I did notice, and this maybe only true with XFX, but from the factory there was a gap between some memory modules, and the cooling.

So some memory chips were seriously overheating probably due to the static air pocket above them. The 7900 GT is passively cool, but there no no insulatation over the chip either (ie static air).

I took off the stock HSF, and applied AS 5, then tightened the heatsink down all the way to make better contact. There was still some gap, but better, and the memory made it to 845, instead of 830 or so before.

I thought the Samsung BJ11 was rated at 900 mhz? The timings on the XFX bios too tight?

[Cranox]

Brand: point of view
Cooling: Stock
Overclock: 728/938
Core/Mem Voltage: stock

No serious benches done , waiting for wc cooling and vmod.

[D4nnyOcean]

Brand: eVGA 7900GTX 570
Cooling: Stock
Overclock: 720/865, 718/870
Core/Mem Voltage: stock

Ran some benches with SLI. Waiting on a 170 0550 UPMW that should be here today and clock better than my current 170 that only does 2.7.
Also have some waterblocks waiting for the cards, so hopefully score go up.
http://service.futuremark.com/compare?3dm05=1915833
http://service.futuremark.com/compare?3dm06=215769

[dpa]

Brand: POV
Cooling: Mach II R404a
Overclock: 900/990
Core/Mem Voltage: 1.81vgpu, no mem mod..

[HeavyH20]

Brand:EVGA regular 7900 GTX
Cooling: Innovatek G70
Overclock: 729/890 on water, 720/875 on air
Core/Mem Voltage: Stock

05 12373

06 6908

[rapty]

Seems like no one here owns a GTX, which is odd, because this is xtremesystems.org.

Anyway, may I suggest we break it down like this, and add some definitions.


Brand: XFX 7900 GTX Extreme (675/850)
Cooling: Stock
Core Overclock: 720
Mem Overclock: 845
Core/Mem Voltage:Stock

Artifact Free?: These clocks are my max artifact free overclocks in battlefield 2. Unfortuantly for battlefield 2 not to artifact I had to lower the memory speed below what XFX rated it at. Memory runs 875 in most other games no problem it seems.

One thing I did notice, and this maybe only true with XFX, but from the factory there was a gap between some memory modules, and the cooling.

So some memory chips were seriously overheating probably due to the static air pocket above them. The 7900 GT is passively cool, but there no no insulatation over the chip either (ie static air).

I took off the stock HSF, and applied AS 5, then tightened the heatsink down all the way to make better contact. There was still some gap, but better, and the memory made it to 845, instead of 830 or so before.

I thought the Samsung BJ11 was rated at 900 mhz? The timings on the XFX bios too tight?

did you put AS5 on the memmory modules and the core or just the core?

I have the same card as you seems I can even get near 700, 695 is the max at the moment tommorow I'll try ocing further what is your pci express frequency?

[Indyxc]

did you put AS5 on the memmory modules and the core or just the core?

I have the same card as you seems I can even get near 700, 695 is the max at the moment tommorow I'll try ocing further what is your pci express frequency?

Just the core. It helped lower the temp a bit, but the day I did it, the next day it was like 70 F outside, so it was hard to tell a difference.

You can't really put it on the memory chips, because the gap appears to be wide between the heatsink and chips. Even with the thermal tape, some chips have gaps, even after I tightened it down all the way. To me, from the factory that is simply unacceptable.

PCI express frequency is at 100.

[madgravity34]

Have you guys tried increasing Pci-express frequency to improve overclocks?

[arisythila]

Just the core. It helped lower the temp a bit, but the day I did it, the next day it was like 70 F outside, so it was hard to tell a difference.

You can't really put it on the memory chips, because the gap appears to be wide between the heatsink and chips. Even with the thermal tape, some chips have gaps, even after I tightened it down all the way. To me, from the factory that is simply unacceptable.

PCI express frequency is at 100.

Did you happen to take off the white pads from the memory moduals?

I took mine off, and noticed that my heat sink does not touch the memory moduals without those pads.... check it out.

~Mike

[Cranox]

Have you guys tried increasing Pci-express frequency to improve overclocks?

Tried up to 112 , oc stays the same ( back @ 101 now )

Edit : Hmm just read that kingpin says that 118 -125 max works ( 112 may be to low )

[HeavyH20]

I use 107 for 24/7 settings. I have had it as high as 115 when benching. Seems to help things a bit. I guess I will have to try the 125 setting to see what effect it has.

[hartigan]

Is anyone volt modding for these.

If so, is there a guide for voltmodding the GTXs?

I've seen PLENTY of information for the GT, but nothing for the GTX

EDIT: after reviewing the results, I guess my question is more geared towards dpa.

[cupra]

first try on that card, will do better, but that is for now:

Brand: MSI 7900GTX 512
Cooling: Stock
Overclock: 700/850
Core/Mem Voltage: stock

[madgravity34]

Thanks for the info guys. Essentially it doesnt matter what I get because they all seem to oc around the same.

[Ozan Baseski]

Brand : PNY 7900 GTX
Cooling : Stock
Overclock : 720/870
Voltage : No Vmod

[Nightprowler_77]

Club3D 7900 GTX

GPU 650 MHz
Memory 1600 MHz

OC (stable 24/7)
696
840 (1680)

Cooling -> stock

[PcCI2iminal]

Brand : Leadtek Extreme
Cooling : Stock
Overclock :730/1965(675/1660)
Voltage : No Vmod

[maverik-sg1]

Point Of View 7900GTX SLI

On Stock Air No Mods:

725/900

Volt modded water cooled:

756/940

PCI-Express set at 110 24/7 - benching at 115Mhz

These babies suck at overclocking!!

[maverik-sg1]

Brand : Leadtek Extreme
Cooling : Stock
Overclock :730/1965(675/1660)
Voltage : No Vmod

Man your memory rocks at those clocks - might try using the leadtek BIOS

[freecableguy]

Anyone care to post a rip of the Leadtek 7900GTX BIOS?

[baracus2k]

you can grab the regular leadtek 7900gtx bios here... i dont see the extreme edition....
http://www.mvktech.net/component/opt...rent,category/

EDIT: nevermind there is only one leadtek 7900gtx and its that one.... so try it out and post some results...

[freecableguy]

link is broken, i sent an email to the site owner. hopefully he will fix it.

[baracus2k]

this one should work
http://www.mvktech.net/components/co...tek7900gtx.zip

[Indyxc]

What volt mod are you guys using? The one used on the 7800 GTX?

Reason I ask is the new 7900 GT for 1.4v seems really easy where you just have to connect to pins on that one chip.

Is there anything similiar for the 7900 GTX?