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Old 07-26-08   #1 (permalink)
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Default Successful 4850 Volt Mod



It went great, and I have awesome clocks, but hellish temps. Are those temps safe? I know the gpu temp is, but what about the mosfets and memory #2 and #3?

New pic with same voltage and such. Even lower clocks. I couldn't get 830mhz stable. I'm wondering if this is even worth it.



I could now boil water on my vrm's.

Part of the reason my temps are so high is because my arctic silver adhesive that I just applied this morning hasn't set yet. I'll probably seee some drops soon, but DAMN!

I don't think a voltmod is really possible unless you're on water. These temps are ridiculous.

Edit: I just rechecked the voltage, and the actual voltage is 1.35v. I think i'll just blow some graphite off and see what that does.

I dropped the voltage to 1.32v, and it dropped my temperatures a lot.



What is temperature sensor #3 though?

Ok new temps

The very max load in furmark will take me up to 79c on the core. It's safe, I know, but i'd like it to be lower.
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i like dmc4, it runs pretty well too,but games are we talking about?
im not planning to play crysis because
its just gonna make me feel unsatisfied with my rig.

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Last edited by mth91 : 07-26-08 at 05:56 PM
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Old 07-26-08   #2 (permalink)
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75 degrees C is fine, 80 is a safe threshold. Also the 4850 can go to higher temps than most other gpus. You're fine. Nice job on the vmod.
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Old 07-26-08   #3 (permalink)
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heh fan speed 14%? temps look safe but i would expect cooler results with the duorb.
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Old 07-26-08   #4 (permalink)
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Yeah, on stock voltage the idle is 32c load 44c. The core is fine, but i'm just worried about the vrm's and memory. #2 and #3. Is that safe? I have ramsinks on there too. It would probably hit like 200c if I didn't.
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i like dmc4, it runs pretty well too,but games are we talking about?
im not planning to play crysis because
its just gonna make me feel unsatisfied with my rig.

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Old 07-26-08   #5 (permalink)
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bump. This is urgent stuff.
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Quote:
Originally Posted by newbile View Post
i like dmc4, it runs pretty well too,but games are we talking about?
im not planning to play crysis because
its just gonna make me feel unsatisfied with my rig.

System: Rig
CPU
Q6600 3.6 GHz
Motherboard
MSI P6N SLI-FI
Memory
4GB (4x1GB) Crucial Ballistix DDR2-800
Graphics Card
Sapphire HD4850x2 2GB
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Old 07-26-08   #6 (permalink)
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Why aren't you running the duorb at 100%? I run my zalman at 100% all the time. Also what is the voltage you have on the chip now?

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Old 07-26-08   #7 (permalink)
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Run the fan faster.
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Old 07-26-08   #8 (permalink)
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The duorb doesn't have a fan controller. So it is running at 100%.
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Quote:
Originally Posted by newbile View Post
i like dmc4, it runs pretty well too,but games are we talking about?
im not planning to play crysis because
its just gonna make me feel unsatisfied with my rig.

System: Rig
CPU
Q6600 3.6 GHz
Motherboard
MSI P6N SLI-FI
Memory
4GB (4x1GB) Crucial Ballistix DDR2-800
Graphics Card
Sapphire HD4850x2 2GB
Hard Drive
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Sound Card
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CPU cooling
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GPU cooling
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Old 07-26-08   #9 (permalink)
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107c holy cow! lol

Bet at those clocks it beats my 4870

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Old 07-26-08   #10 (permalink)
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Maybe so, but it's still ridiculous temperature-wise. I'm using zaman RHS1's with thermal tape for the vram, and for the mosfets, vrm's, pwms, or whatever all that crap is on the right I have arctic silver adhesive that I just applied this morning. It still has yet to set though.

You all knew I was going to do it eventually... lol Same went for my 7800GS and 8800GT.

I'm surprised by the temperatures though, because if you go here http://www.xtremesystems.org/forums/...=190990&page=1 you'll see that people with those vf1000's are getting really good temps in comparison. I have as5 applied and everything. Maybe it just needs some time to set...
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Quote:
Originally Posted by newbile View Post
i like dmc4, it runs pretty well too,but games are we talking about?
im not planning to play crysis because
its just gonna make me feel unsatisfied with my rig.

System: Rig
CPU
Q6600 3.6 GHz
Motherboard
MSI P6N SLI-FI
Memory
4GB (4x1GB) Crucial Ballistix DDR2-800
Graphics Card
Sapphire HD4850x2 2GB
Hard Drive
250 GB WD SATA 3.0Gb/s + 320GB Maxtor SATA 3.0Gb/s
Sound Card
Integrated
Power Supply
OCZ GameXStream 850W
Case
HAF 932
CPU cooling
Xigmatek HDT-S1283 w/ 120mm Ultra Kaze
GPU cooling
Dual MCW60's
OS
Windows 7 Ultimate
Monitor
Hanns-G HG-216DPO
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