MSI NX7900GTO T2D512E is 7900GTX?!

[HeavyH20]

Well, instead of loosening the timings via BIOS edit or flashing the card with the GTX timings which are too loose, I took a different tact and tightened the timings. It did not affect the memory clocks and improved in game performance as well as benchmark tests.

Timings:

timing-----------GTX-------GTO---------BJ11 ------ BC14-------Mod
tRAS------------24-----------22----------25---------22---------19
tRC-------------34-----------31----------35----------31--------27
tRFC------------43-----------39----------45----------39--------34
tRCDR-----------12-----------10----------12----------10--------9
tRCDW----------8------------6------------8-----------6---------6
tRP-------------10------------9-----------10----------9---------8
tRRD------------8------------10-----------8-----------8---------9

So, single 7900GTO @ 710/825, 3DMark05 - 12201 with an AMD dual core at 2.8 GHz.
http://service.futuremark.com/compare?3dm05=2265796

3DMark06, 6801, @ 710/825
http://service.futuremark.com/compare?3dm06=553054

COH, 1280x1024, 4xAA, 8xAF

[Garrett]

must I pencil both resistors or just one of them???

I penciled ONLY the left one
Not both
I'm actually surprised to reach 905 with tighter (1.4ns) timings at 'only' 1.95v... but hey I won't complain :thumbsup:

@ PiLsY:
You won't rip the white memory pads just like that, just be careful
When you remove the cooler they're 100% intact, tried it on my 6800GT back in the days, and with this card, no problem
Just be very gentle when lifting the pads off the cooler or the card's memory, sometimes they stick on the cooler, sometimes on the memory.
If you're careful it should be ok, then put them on the cooler, put the cooler upside down in a safe place and apply alternative cooling

[GOESA]

HeavyH20 <--

What did you get before you tightend up the timings? in 3dmark and such I mean...

/Grau

[Garrett]

I've tried some resistances and voltages:
792 ohm gives 1.98v and 748 ohm gives 2.02v for the memory
Hope this helps some people
So ~770 should give 2.00v I guess...

[vyper]

Pencil mod ftw!

Pencilled the resistor to 0.759 which gave me 2.03v vmem.

I can't break 12k tho , and this is really pushing my ram @ 938





Seems very stable to me. No artifacts on futuremark or Ati tool.

[HeavyH20]

HeavyH20 <--

What did you get before you tightend up the timings? in 3dmark and such I mean...

/Grau

400 points in 3Dmark05, 250 in 06 and 25 fps peak (4 fps average) in COH.

[PiLsY]

Tbh I'm not too concerned about a few yellow dots in ATI tool - I don't spend much time using it . All my games run perfectly as does 3dmark etc. Incidentally, I'm using the 91.47 dets off the nvidia page.

At the moment I'm so cpu limited (3700+ SD @ 2.75ish) there really wouldn't be much improvement in getting the clocks up any more. Cheap ram too (233@3/3/3/9) and the board doesn't seem the best at cpu clocking as well (A8R32-MVP) as going from 1.45v to 1.55v gets me a whole 10mhz. I'll have a go at the mem mod this weekend and see what it does for me though. Having said that while the cards out I'll probably end up checking the heatsink contact anyway. If I do rip those pads what can be used as an alternative? The shin etsu pads I can get round here doesn't look thick enough?

3dmark 06 is getting me 4750, 05 I get about 11500, 03 I get 23500 and 01 I get 36000. Any "tweaks" I do now really aren't going to give me much of an improvement until that cpu gets replaced. Leaning towards an opteron 165...

Matt.

[vyper]

@HeavyH20: where or how are you getting those timings for your card? When I bring up my timings in Nibitor, this is what I see:

[Garrett]

It's your cpu, vyper... I had my X2 3800+ @ 2816mhz during my 12k run... X2 seems to score just a tad higher with 05

-edit-... proof of voltages

[PiLsY]

Vyper : You need to set the memory timings set to 3 in the pull down box - either that or click auto select.

HeavyH2O : I tried your timings. I've got a bit of a boost in 3dmark 06 (about 350 points I think), but I'm getting artifacts now (a couple in the first test, lots in deep freeze). Will leave the modded timings on for now and try the pencil mod to stabilise it. If I can get the ram to 900mhz at these timings it should be good for 5500 in 06. I think its the TRRD setting though - I tried playing with that when I was messing with the bioses and it always gave me artifacts at anything below 10. We'll see how it responds to voltage thought before i change it back. Incidentally, TRRD from 10 to 8 alone gives you about 265 points IF you can stabilise it.

06 score is now at 5286, managed to tweak over 500 points out of it last night . I'm quite proud of that score for a single core on air with an unmodded gfx card. My whole pc cost me less than a 7950GX2 .

Still a little more to come after the vmem mod, hopefully some more core if I find its got poor contact. Probably just a crap GPU though. My maximum artifact frree core clock is 662mhz (24hrs of ati tool artifact scan). 666mhz artifacted a few times and 675 artifacts every 10 mins or so. Nothing noticeable as graphics corruption, but ati tool beeps at me. 685mhz I get artifacts in 3dmark.

Matt.

[GOESA]

HeavyH20:

wanna share your bios? might come in handy, because I don't know how to change the timings hehe..

/Grau

[BulldogPO]

Yeh, I´m interested about that bios also
Is there any windows flasher for nVidia cards??

[Alexandrus]

No, no Windows flash for nVIDIA cards, you need good old DOS mode, I see this questions asked like at least 2 times per each topic.
You can edit the timmings with BIOS Editor 3.3.

[BulldogPO]

So I&#180;ll need to use USB stick or burn CD...

[Alexandrus]

Well, whatever works for you, I preffer Windows 98SE installed on my primary partition, FAT32, works great, not to mention that when I need to reinstall Windows XP I can just boot Win98, delete WinXP and start from 0, much cleaner aproach.

[Robbie]

So I´ll need to use USB stick or burn CD...

Id like something to flash using a usb stick, that would be nice.

[vyper]

Why flash the entire bios when he's just changing the memory timings? Just use Nibitor.

[Garrett]

Why flash the entire bios when he's just changing the memory timings? Just use Nibitor.

You can't change timings on-the-fly... you need to open up a bios file (can be a backup of your current bios) and flash that bios WITH those adjusted timings

[vyper]

What driver are you guys using with this card?

[Nazu]

What driver are you guys using with this card?

91.47 Forceware.

[Nosfer@tu]

91.47 Forceware.

92.91 Here.

[Garrett]

92.91 Here.

Roger that
Anyone know of any pencil mods for the gpu?
Probably not huh

[NickS]

Prolly same as GTX mods.

[HeavyH20]

@HeavyH20: where or how are you getting those timings for your card? When I bring up my timings in Nibitor, this is what I see:

That is the first timing table (set 0). The one you want to look at is the third. Here are the timings I use.



I have attached the BIOS I use. It is a 650/750 clocked BIOS with the tighter memory timings. The ZIP file is clean of any and all viruses.

Flash command:

nvflash -j -4 -5 -6 gto-tm.rom

The higher default memory clock will also allow Coolbits to clock your memory well above 800, assuming it can handle that.

[BulldogPO]

Thnx.