Yes I have put some sinks on them, the IC's are probably OK even running twice as hot but better safe than sorry and its an easy thing to just put sinks on :)
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Yes I have put some sinks on them, the IC's are probably OK even running twice as hot but better safe than sorry and its an easy thing to just put sinks on :)
I can confirm this, these two gets very hot, even on the 1.3V mod (which I have)
Isn't this a bit strange, since those two IC's control vmem and not vgpu...?
I don't know how warm those ICs were before the Vmod
I had an extra couple of bga copper ram sinks I put on those 2 IC's. For anyone not sure about volt mods, you REALLY do need a multi meter. Not only does it ensure you're getting the proper volts from the mod, but you need it to measure ohms when doing pencil mods. Its like driving in the fog at 120 mph with no headlights.
If you don't have the equip, don't do the mod!
I didn't want to make anyone upset but I feel the same way Haltech! Voltmodding your cards without a way to measure either resistance or voltage can be dangerous and at the very least makes it difficult to properly do the mod. I think this becomes especially true when modding with "Pencil" because your not just connecting 2 points, you are trying to lower the resistance to increase voltage and this needs to be somewhat accurate to get to the voltage you want. Basically just be careful, and remember it's cheaper to buy a halfway decent multi-meter than it is to buy a new card!
Sure here´s how i did the 1.55V modQuote:
Originally Posted by graham_h
http://img417.imageshack.us/img417/4...lified13je.jpg
this is also 1.55 right ?
Quote:
Originally Posted by Ebola
Thank you for the larger picture.. :up:Quote:
Originally Posted by Shark-357
Can anyone confirm that those IC's are also hot @ 1,2v (default vgpu) !!?
Because if those IC's are used for the mem circuit, then it should not get hotter with the vgpu mod's. But can those IC's + HS provide a better mem OC ?
And as for the need of a multimeter, I think it's very wise to have and use one (I have/use). But I thing that the 1,4/1,5 pen mod's are so easy and trouble safe that if it is done with atention you can pass well without a multimeter. ;)
I don't think you need a meter for the basic conductive ink vCore mods, but I don't recommend the vMem mod without one.
What about the mem themselves? Do they get pretty warm after the pencil mod? I ask as I don't have any bga sinks readily available and I want to do the vmem mod. If they don't get too hot I will give it a whirl.
My 1.4V mod can enabled and disabled using a jumper so I put it back to default and the two IC's are still by far the hottest components in my whole rig :fact: :)Quote:
Originally Posted by jVIDIA
Here is my experience.
I have a XFX 7900GT Extreme Edition 520/1500 (default speed)
I did the "easy volt" mod (ink) and the switching frequency mod (pencil). It took 15 minutes to perform both mods.
I swapped the heatsink to a Zalman VF700cu. (The stock heat sink is loud and hot running)
I run my Zalman at the slowest possible speed and it is completely quiet. Not bad for a top of the line graphics card. I hate fan noise!
As a comparison:
The Stock fan temperature was 52c idle and 83c during load. = LOUD
The Zalman at the slowest possible speed, 49c idle and 68 during load. = quiet
1.20 volt, max overclock: 540/1770
1.40 volt, max overclock: 645/1770
1.45 volt, max overclock: 662/1770
1.50 volt, max overclock: 682/1770
1.55 volt, max overclock: I haven’t tried it yet. But it looks like 700Mhz is possible.
I really have no need to push it further since my AMD 64 3200+ CPU is a total bottle neck. I ran a 3dmark05 with 7900GTX speed settings (650/1600). It scored 9603 3dmark05 points. A 4400+ X2 probably would have scored 10,500 to 11,000 points.
By the way. I paid $309 including shipping at ZipZoomfly.com
iluv2fly , your "max overclock" is the "Find Optimal Freq." or is you manual OC without artcrafts ?
Can anyone confirm, especially those with vmem mods and high overclocks, that the ram modules are K4J55323QG-BC14? I just received my Sparkle 7900GT, which is not exactly known as a stellar brand, and it has a blue pcb -- so I fear they may have strayed further from the reference design.
Wish I could help ya wma, but I've got ramsinks on mine so I can't really take a look anymore.
wma,
I have an eVGA 7900GT with stock clocks of 500/1500 and the memory IC's are also BC14's so I think you'll be fine. This stuff does much better than the older memory from Infinion on the 7800GT's.
Thanks Roger. I was a bit worried when I saw it's only rated at 700MHz, but I got mine to 1800MHz DDR just fine at stock.
That's artifact free. Anything above it and I will have artifacts.Quote:
Originally Posted by jVIDIA
Those IC are connected to the memory and other components. Everything on the PCB is connected someway (through something) to the GPU. If the GPU gets hot, so does everything else. During phase-change VRAM cooling, Shamino found, its just better to adequately cool the GPU, and the VRAM will stay cool.Quote:
Originally Posted by jVIDIA
thank you so much for the GPU scaling results! Perhaps in the future you will try again with the Zalman on high setting (instead of lowest).Quote:
Originally Posted by iluv2fly
iluv2fly, after seeing your results I became more happy with my card because @ 1.50v it passes the coolbits test with 686/900. :D
With Powerstrip or ATITool it goes higher w/o artifacts !
I've passed the test with 686/920 too.
Could either the NV5 or a Zalman VF700cu handle the 1.55mod in a small FF pc?
Thanks.
I don't think so...unless you had extremly good airflow and low ambient tempsQuote:
Originally Posted by turbo
Mine starts getting a bit warm with 1.5v on water
If you have good air conditioning and good case air flow the vf700cu might be able to. My vf900cu does fine on my 1.5v mod and does great when my a/c works. I don't know for sure if the vf700cu could, but I hear it's comparable performance to my vf900. I don't know the capability of the NV5, but considering that it exhausts the air out of the case will keep the case temps from affecting it as much as with a vf700 or 900.
EDIT: definition of "fine" when my a/c isn't working and I let ATItool heat it up my core temp's highest is 61c. When my a/c is working highest is 55c. When playing oblivion highest is 50 w/out a/c.