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How To:Flash your 5850 Bios - Page 13

post #121 of 272
Quote:
Originally Posted by donutpirate View Post
Max I've been able to get my card at stock voltages is 900/1250. Although, lately I've been using 878/1300. Shame that I can't flash my card.

This poses a question for me... Which is more important? Core clock or Memory clock?
Core clock has a greater impact on performance. Find your max core clock first, and then find your max memory clock.
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Jack the Dull Boy
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post #122 of 272
Quote:
Originally Posted by OC Me View Post
Core clock has a greater impact on performance. Find your max core clock first, and then find your max memory clock.
I found my memory limit first using GPUTool. It took me about 15 minutes total to find stable voltage, core and mem settings I liked.
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post #123 of 272
The problem with that with these cards is that they have an auto throttle feature, so even if the OC isn't stable, the card will throttle back to prevent it from crashing.

From what I just ran, I scored higher in Heaven, 3dMark06 and Kombuster with 878/1300 than I did with 900/1250
post #124 of 272
just got my visiontek 5850 today and used this guide to flash to the asus bios. great tutorial. everyone's input in this thread made it so easy to flash bios. now i'm just looking for a nice, stable overclock

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post #125 of 272
Quote:
Originally Posted by JH4DC5 View Post
just got my visiontek 5850 today and used this guide to flash to the asus bios. great tutorial. everyone's input in this thread made it so easy to flash bios. now i'm just looking for a nice, stable overclock
Nice, I have the same card! Let me know what clocks and voltages that you're able to get out of it.
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post #126 of 272
Quote:
Originally Posted by Fried Chicken View Post
Nice, I have the same card! Let me know what clocks and voltages that you're able to get out of it.
right now i'm at 950/1250 @ 1.22v. it's 15 minute furmark stable and 30 minutes occt stable w/ no errors. i had voltage around 1.2v and was stable in furmark and occt, but after playing 15-20 minutes of bfbc2, i would get BSOD. havent tried playing bc2 with these voltages yet though. hopefully it holds up.
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post #127 of 272
In case anyone's interested, on reference 5850 cards using the unlocked Asus (i assume also msi) bios it's totally possible using RBE to mod the bios to set whatever default core/mem clocks you want, and whatever voltage you want.

After modding my bios, my card currently shows 925/1225 for the default clocks, so I run those w/o needing any OC software. I didn't change the voltage from the stock 5870 level (1.162), but it's simple to do so if I'd wanted to. IOW, it's very simple to flash your card to run 1000@1.25V (or whatever is stable for you) as it's 3d defaults. Powerplay still works perfect, too.
Edited by brettjv - 4/13/10 at 4:13pm
    
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post #128 of 272
Quote:
Originally Posted by brettjv View Post
In case anyone's interested, on reference 5850 cards using the unlocked Asus (i assume also msi) bios it's totally possible using RBE to mod the bios to set whatever default core/mem clocks you want, and whatever voltage you want.

After modding my bios, my card currently shows 925/1225 for the default clocks, so I run those w/o needing any OC software. I didn't change the voltage from the stock 5870 level (1.162), but it's simple to do so if I'd wanted to. IOW, it's very simple to flash your card to run 1000@1.25V (or whatever is stable for you) as it's 3d defaults. Powerplay still works perfect, too.
But then aren't you using more electricity 24-7 compared to only overclocking when you need it in games? Plus I would imagine running it with that amount of voltage all of the time will wear the card out faster?
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post #129 of 272
Quote:
Originally Posted by Fried Chicken View Post
But then aren't you using more electricity 24-7 compared to only overclocking when you need it in games? Plus I would imagine running it with that amount of voltage all of the time will wear the card out faster?
Overclocking is not about saving electricity, it's about performance.
You don't don't run 92 octane in a drag racer.
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post #130 of 272
Quote:
Originally Posted by Fried Chicken View Post
But then aren't you using more electricity 24-7 compared to only overclocking when you need it in games? Plus I would imagine running it with that amount of voltage all of the time will wear the card out faster?
No. That's why I said '3d defaults' and said powerplay (2d = 157/300/.988V) still works perfect. The changes are only made to the 3d mode of operation.
    
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