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ATI Radeon X850 Pro Softmod

rbinc

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Joined
Mar 16, 2005
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Firstly, here's my system specs:

Intel D865GBFL Board
P4HT 3.0GHz 512KB L2 Northwood
Kingston ValueRAM 2x512MB Single Channel DDR400
ATI Radeon X850 Pro (R481) (500/500MHz) AGP 8X VIVO (I think) w/ Catalyst 5.8
Creative SB Audigy 2 ZS OEM
Windows XP Pro SP2

I want to flash the BIOS to the XT or the XT PE to unlock the 4 pipes. I used ATITool and I get artifacts at 520/540 (X850 XT stock) with my stock fan/heatsink. I'm not sure how to remove the artifacts. I ran the fan at 100% but no luck. Do I have to buy a seperate cooling solutions to remove artifacts? Or is it that the card can't go any higher no matter what?

I still want to try and do the softmod to the XT. But I can't figure out which BIOS is a PCI-E and which is an AGP, and which one's are R420, R480, or R481. Can someone suggest a BIOS I can use. And I also want to know how to revert to my original BIOS if I do a bad flash.

The best score I got in 3DMark05 with stock was 4888. That seems way too low considering I had a softmodded Sapphire Radeon 9550 Pro (9600 Pro) that had ~1500.
 

rbinc

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Mar 16, 2005
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Well I went ahead with the softmodding anyways. My clocks are defaulted to 540/590 every restart, but unfortunately I have to use ATITool to change them to 500/500 since the stock fan/heatsink can't handle it. But I do have 16 pipelines now. My new 3DMark05 score with 500/500 is 5362, a hefty boost. Now I just have to find a way to default the GPU clocks to 500. Using ATITool every restart is very annoying. Any help would be appreciated still.

BTW, I'm looking for a good fan/heatsink for my card, now that I have OC'd it well beyond its limits (515 was the highest Core ATITool got). If it matters, I live in Toronto, Canada. Here's a link to the exact card I bought.
 

Ryosuke

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May 19, 2005
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Location
Brossard,Quebec,Canada
Processor Athlon 64 3500+ Newcastle
Motherboard K8N Neo2 Platinum
Cooling Accelero X2 and Freezer 64
Memory 1 gb Corsair Twinx pc3200 c2 pro
Video Card(s) Sapphire x1950 pro
Storage Raptor 32gb + Seagate 120gb
Display(s) Samsung SyncMaster 941bw
Case Black Xblade
Audio Device(s) Audigy
Power Supply Antec Neopower 480w
Software Windows XP sp2
I got the same card as yours and did the same softmod as you, if u dont wanna use atitool to put ur default clock (500/500), juste flash your card with the default bios(x850 pro). ;)
If u want to overclock it to xt pe (540/590) u should use the 850pro bios, because i cant overclock my mem with xt bios even with ati silencer 5 (atifact at 520), but with "pro" bios i dont have problem to get to xt clock. hope u understand what im explaining. ;)
 
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rbinc

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OK then I'll revert to my original BIOS with ATIFlash so that I still get 16 pipes. I might as well get a new fan anyways because this fan is very annoying. Even at the slightest overclock the fan goes to 100% and it really is louder than my processor and power fan combined.
 

SeLrAhC

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Sep 11, 2005
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yeap... that is a very good solution from ryoskue

neway... if silencer can't perform... u might wanna opt for zalman
 

SeLrAhC

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Sep 11, 2005
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hmm.. it seems like a pretty decent product to me... the design is just like the zalman's but with better build and a plastic heat 'pipe'

d thing is... how high is cfm of dis cooller?... 2500 for a 12 is ok.. but it could b around 80+ cfm

i think it should b fine... but d price? y dun you consider/compare pricing for silencer or zalman that have been proven to b quite good..
 
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