How to Modify Your HD2900 BIOS Clock Frequencies by Hex File

Quote:

---

Originally Posted by Guz

Touge have you been able to perceive any improvements in benches. Like in 3dmark or crysis??

I say so, cause in my case overclocking does not yield ANY improvement in benches or fps. :down:

---

There must be something bottlenecking you then. If not hardware, then software related.

Quote:

---

Originally Posted by Guz

Touge have you been able to perceive any improvements in benches. Like in 3dmark or crysis??
I say so, cause in my case overclocking does not yield ANY improvement in benches or fps. :down:

---

Quote:

---

Originally Posted by 003

There must be something bottlenecking you then. If not hardware, then software related.

---

I would agree. Even bumping to 800/900 on the stock coolers gained several hundred points in 3dmark06 for me, and that was on my E6600. My 3dmark06 score is now over 20K.

If someone can check my moded bios for HIS2900pro, my mobo is abit ip35-e and i have several times flashed card and blacked out my pro.:rolleyes:

Quote:

---

Originally Posted by Guz

Touge have you been able to perceive any improvements in benches. Like in 3dmark or crysis??

I say so, cause in my case overclocking does not yield ANY improvement in benches or fps. :down:

---

Quote:

---

Originally Posted by 003

There must be something bottlenecking you then. If not hardware, then software related.

---

Quote:

---

Originally Posted by super dank

I would agree. Even bumping to 800/900 on the stock coolers gained several hundred points in 3dmark06 for me, and that was on my E6600. My 3dmark06 score is now over 20K.

---

Yeah, there definitely is a good bump in 3DMark05/06 w/ higher core clocks. If you are not seeing improvements in benchs then you've got something holding you back, what hardware are you using?

Quote:

---

Originally Posted by FINRamona

If someone can check my moded bios for HIS2900pro, my mobo is abit ip35-e and i have several times flashed card and blacked out my pro.:rolleyes:

---

Here it is, with corrected checksum.

Thanks, i post results some day

Quote:

---

Originally Posted by TouGe

Yeah, there definitely is a good bump in 3DMark05/06 w/ higher core clocks. If you are not seeing improvements in benchs then you've got something holding you back, what hardware are you using?

---

intel e6600 at 3.2ghz, intel badaxe 2, 2xhd2900 in crossfire, 4gb of ram. I always get 14,000 3dmarks with any bios be it at default speeds or overclocked.

Quote:

---

Originally Posted by Guz

intel e6600 at 3.2ghz, intel badaxe 2, 2xhd2900 in crossfire, 4gb of ram. I always get 14,000 3dmarks with any bios be it at default speeds or overclocked.

---

Your cpu clock speed is bottlenecking you, plain and simple. Another 500-600mhz would resolve it, and get you closer to 18,000.

about us abit users and our checksum fixing.

ive figured out the math behind it, its rather simple actually.

#1 there are numbers and letters in order from least to greatest is 0-9 then A-F (representing 10, 11, 12, 13, 14, 15) then it loops back to 0

#2 when this numbering system is taken into account you can compare the checksums to see what the difference (#) between a modified and unmodified bios checkums... i.e. (just did this 1 in 1 try) unmodified bios is 0xD200 and the modified bios is 0xD1D1.. thus the checksum numbers are ordered as follows... 0xD200 > 0xD1D1.

so to find the difference between them (an actual numerical value) you can count/calculate it. for example the difference between 0xD1D1 and 0xD1D2 = +1, 0xD1D3= +2... 0xD1DF= +14... 0xD1E0= +15... 0xD200 = 47.

so the numerical difference between 0xD1D1 and 0xD200 is 47

47 converted to hex is 2F

so what do we do? we insert the calculated checksum difference in hex (2F) in 2 00's in the no power cord message to get matching checksums.

finally, no more guesswork! :up:

Quote:

---

Originally Posted by ZenEffect

finally, no more guesswork! :up:

---

Thanks for the breakdown!

I just check my newest editetd bios and everything looks like fine but checkrum give error.

im dont just understand.... :shrug:

Still one trap: while clocks and powerstates are inverted, the checksum isn´t!

@finramona

for a Pro Bios checksum must be 08B00

Quote:

---

Originally Posted by Don Quichote

Still one trap: while clocks and powerstates are inverted, the checksum isn´t!

@finramona

for a Pro Bios checksum must be 08B00

---

Thanks, i try to learn... :yepp:

Quote:

---

Originally Posted by super dank

Your cpu clock speed is bottlenecking you, plain and simple. Another 500-600mhz would resolve it, and get you closer to 18,000.

---

If that were true then why crysis benchmark at 1920 does not bench any higher? Crysis is totally gpu bound.

Bios works but crashing 3dmark06 second test. Temps: Load max 85*C 1.3V 840/900.

I have runned this card 24/7 820/910 whitout problem.(orginal voltage)

Highest clock what i never seen is: 870/1020 1.275V to atitool: 3dmark06 run all test, but lots of artifacts.

I think change back to xp and OC whit atitool.

Hi All, recently flashed my Pro to XT has been working fine but im lost in these threds and dont know what to do. Can someone help me decide?

1-Should i go back to pro and use ATI Overdrive?
2-Should i go back to a modded pro bios?
3-do nothing
4-Should i flash with a modded XT bios?

What diferrence does the mem or/and core volt do when played with?

If i'm suggested to use a modded pro bios,i would need a link for it :)

Thanks

It's your decision clearly..

Speaking for myself;
I want to play Crysis at reasonable framerates (>50fps) on a lcd 1680 x 1050. To achieve this I have to OC core to about 900Mhz. To be able to do this vcore must be about 1.30V. I have the cooling to make this possible. Do you?

(no need på crank up the clock/voltage if playing pac-man :D )

This is just messed up. I have NOTHING at the info fields after putting atiflash -p -f 0 name.bin. And if i hit enter i get dead card and gotta blindflash it to life...

Whats wrong here? I tried like 10 different bios from here, non of them work.

If you have a Abit motherboard - read this thread a few pages back.

Nah, i have DFI infinity P965.

Quote:

---

Originally Posted by Praimm

Nah, i have DFI infinity P965.

---

you could be having the same problems as abit users (NO idea what the true cause of this is) so try fixing the checksum and try again... it probably will work that way

Quote:

---

Originally Posted by ZenEffect

you could be having the same problems as abit users (NO idea what the true cause of this is) so try fixing the checksum and try again... it probably will work that way

---

Nope, it didint. I tried the fixed bios and still nothing.

Just a thought, im using 2x 6pin connectors, could it be the problem?

Praimm
try a:atiflash -f -p 0 name.rom

I somehow agree with Guz that it is not tangible or significant improvement in the fps when you overclock the GPU.

Must be something to do with the timings of the memory because I cannot feel the games running faster with my naked eyes

For sure the GPU runs hotter with the new bios (currently at 830/950), which confirms the increased speed in the GPU.

Can somebody post results pre and post bios mod? No 3Dmarks please

could someone help me modified this bios to 1.25v and 1.3v 850/920 just perfect. i'm using Abit X38 mobo and never success to make the correct checksum, always black screen after reboot :(

thanks....