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7900GT Ram-mod help

post #1 of 15
Thread Starter 
Can anybody provide instructions and information on where to vmod the ram and how much I should go with my Swiftech MC14 ramsinks? I just did the GPU vmod an hour ago and got to 730Mhz core so far, while lowering memory to 1700 effective.
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post #2 of 15
Didnt think you could V-MOD the RAM. However I would leave it at the GPU V-mod as a RAM v-mod could be risky.
post #3 of 15
Thread Starter 
Quote:
Originally Posted by ENTERPRISE1701
Didnt think you could V-MOD the RAM. However I would leave it at the GPU V-mod as a RAM v-mod could be risky.
I only heard it's a pencil mod, but I've got no clue where and how much. I think these Swiftechs will be fine.
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post #4 of 15
Well im vague on this subject. However i know the GPU is a pencil Mod but as for RAM i am not all to sure.

THIS MAY SHED A LITTLE LIGHT : http://forums.vr-zone.com/showthread.php?t=72111

I FOUND A TUTORIAL FOR YOU : http://endeavorquest.net:8880/7900GT_VM/index.htm
post #5 of 15
That's a easy volt mod you need a conductive pen.And connect 2 to 3 modules.I you can find the august cpu magazine is there with all the pictures and good information.Good luck.
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post #6 of 15
RAM mod is w/ a pencil....check vr-zone for the post, I have done the mod, up to 2.2v vdimm stable at 2ghz, you need to "sink" one of the Ic's toward the back of the board near the mod area....{look in the pic's}This is VERY necessary, use some silicon thermal paste to stick it in place.
I suggest buying a small set of dip switches to do your Vmod on the gpu, it will enable you to set 1.3,1.35,1.4,1.45,1.5,1.55 There are other mods available to go beyond 1.55v, but I do NOT recomment 1.6 unless you phase. I have seen the pcb's warp in some cases from the heat generated. Here are some pics of my old set up. I am currently running at 1.4v 630core / 2.2v 1850, for every day use.

Attachment 32877

Attachment 32878

Attachment 32879

Attachment 32880

Attachment 32881 Hope this helps some...dont get confused by the "extra plug" on my board, that is for the gauge in the front that displays the voltage for the gpu and the vdimm, w/ the selector switch. Good modding, and good luck.
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post #7 of 15
Thread Starter 
Errr crap, never knew how to measure ohms properly. I measured it while it was running and now it doesnt work anymore.

Any tips other than doing a RMA?
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post #8 of 15
When was running what?If is the card's you doing OK.if not the card's dont have any power.You have to find the rigth place to check the volt's maybe you went way too much?And measure in the wrong place?
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post #9 of 15
Thread Starter 
Quote:
Originally Posted by alexisd
When was running what?If is the card's you doing OK.if not the card's dont have any power.You have to find the rigth place to check the volt's maybe you went way too much?And measure in the wrong place?
It wasn't the overclocking part, I just learned that I wasn't supposed to check the ohms while the card's running, unlike measuring voltage. I did everything at the wrong place an the last thing at the wrong time.

Oh well I just got myself a X1900GT an hour ago.
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post #10 of 15
Damn, that sucks to hear, that was one hell of a card.

*EDIT: Should read next time.
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