700mhz wall on HD4850 is smashed.

[AliG]

If you are gaming at 1280 x 1024, or you are satisfied with Crysis, then you don't need to spend more. If you want more score on... say... 3DMark Vantage, do spend more. It's only $26 extra to get close to, or if you are lucky, above 4870 performance.

once again, I know what I'm doing. I don't care about crysis performance, too much hype for nothing. Great game, better gfx than I expected, but still it's only 1 game. And I game at 1920*1200, so the extra power will help. The thing is that I have an amd cpu that is holding me, that is why I'm debating whether or not to spend the money. If anything I'll get the s1 but only keep it at 700mhz for the silence and better cooling. But I still want to cool the VRM, so that's another big thing on hold.


Once again guys, I know what I'm doing, I probably have more experience than most of the people at xs anyways, I'm only new to modding, I've done my share of ocing and am building a phase change. My only difficulty is my tight budget, and that's why I have an amd cpu still and have to debate about spending $26

[binormalkilla]

It's not that unusual, ATI relaxes the ram timings as you clock it higher, also you might note the cards ram needs to clock up in 25mhz jumps. They sync at intervals of 25 so keep the freqs divisable by that number.

The core is also affected by the same problem, this has been true since the 1900's AFAIK. find out where it performs best ( the factory setting is a clue.) then stick to the ratio. I would tell the number but I am going for some cups this weekend and I need all the tweaks I can to get past Gomeler.

Yea this is true regarding the reference clock. The memory reference clock on the X1950 PRo was 27 MHz, and I think the 2900XT is as well......
If you run the system diagnostic report in Rivatuner it will give you the reference clock (I believe it's toward the bottom.)

Devious I would try keeping the memory at default speeds and OC the core independently.....if the scores still get worse I bet that the clocks are being dropped due to a driver timeout or something to that nature.
When you edit the BIOS put the OCed core frequency in all of the 3d clock fields....leaving only the 2d as the different frequency.
I mean I really doubt that the driver could time out and recover so fast that you don't even notice during the bench (let alone not cause an app crash), but it's worth a shot.

[Clemmaster]

I have also experienced the problem mentioned but Ive been using 3dmark vantage to check. This happens exactly around 800-850mhz. I havent got any higher. Also, the memory clock speed seems to have a large effect at this point.

Is it fully stable @ theses frequencies?
Mine increases 06 scores up to 900-1200 (can't go any higher, even with higher volts on GPU and memory does 1200 with stock voltage)

[Devious]

Is it fully stable @ theses frequencies?
Mine increases 06 scores up to 900-1200 (can't go any higher, even with higher volts on GPU and memory does 1200 with stock voltage)

when you say 900-1200 you are talking about memory ?

[Jaystar]

use ati tray tools ---> advanced options ---> Multi-Thread Support enabled. 2 for dual cores and 4 for quads. This should allow for better cpu scaling.

[chri5g]

Company of Heroes Dx10 AA4
800/1110=Avg: 51.527
825/1110=Avg: 53.337
850/1110=Avg: 54.711
everything is ok with clocks in games,problems are 3Dmarks

[Factotum]

Company of Heroes Dx10 AA4
800/1110=Avg: 51.527
825/1110=Avg: 53.337
850/1110=Avg: 54.711
everything is ok with clocks in games,problems are 3Dmarks

800/1110=Avg: 51.527
825/1110=+3%
850/1110=+6%

[binormalkilla]

Company of Heroes Dx10 AA4
800/1110=Avg: 51.527
825/1110=Avg: 53.337
850/1110=Avg: 54.711
everything is ok with clocks in games,problems are 3Dmarks

I'll be testing mine with Vantage when my cards arrive.....3dmark06 is pretty much worthless now IMO. It's more or less a CPU test than a GPU test considering that everyone runs it at 1280x1024 with no AA/AF.

[biohead]

bios 1.2v, no hardmods yet.

mounted thermalright SI-128 on GPU and used ramsinks on VRMs w/ 80mm fan on it. memory is naked. will post pics later in ghetto mods thread.

stock cooler max 740/1075

now 770/1150. idle 26°C load 35°C (fan@max or else load = 38°C). more voltage will be nice.

this run is @ 1125 mem

[LuxZg]

Quick question.

Would you rather run the card with aftermarket cooler (AC S1+120mm fan) with memory chips on stock or moderate OC:
- NAKED
- with ordinary mem HS (like aluminium ones that come with S1)
- investing more money for copper ones

If you can, you can list them in order of preference Thanks!

P.S. I'm asking, cos soon I'll be remounting my S1 to 48xx once I buy it, but if naked chips are ok, I'd rather NOT bother with sticking its mem heatsinks on mem again as it's pain in the a** LOL Airflow in the case is real good, plus that 120mm fan will be blowing on the card through S1..

[binormalkilla]

Quick question.

Would you rather run the card with aftermarket cooler (AC S1+120mm fan) with memory chips on stock or moderate OC:
- NAKED
- with ordinary mem HS (like aluminium ones that come with S1)
- investing more money for copper ones

If you can, you can list them in order of preference Thanks!

P.S. I'm asking, cos soon I'll be remounting my S1 to 48xx once I buy it, but if naked chips are ok, I'd rather NOT bother with sticking its mem heatsinks on mem again as it's pain in the a** LOL Airflow in the case is real good, plus that 120mm fan will be blowing on the card through S1..

I would never run a graphics card with naked memory if it's a high end card.....as it will have a decent amount of voltage through it, thus heat......I'm a better safe than sorry kind of guy though :p
I would suggest getting some decent copper sinks. They're comparatively inexpensive when you consider the 4870s price.
These are the best, I've used these on a few cards.
These are decent, although they don't have as good of thermal tape.
I've removed my RAM sinks several times to mod them in order to make them fit with my sound card and they always stick back (Swiftechs)

[STEvil]

Naked mem is usually fine as long as you have airflow on it.

Heatsinks which contact both the memory and GPU often cause poor contact and create excessive heat buildup in parts that do not require a heatsink producing instability and part failures.


If you really want to know whether it is safe or not aim an infrared/laser temp probe at a memory chip while running some 3D. Over 50c i'd add some sinks.

[LuxZg]

OK, since I don't have temp probe, I will probably stick those alu-heatsinks that come with S1 for now..
Unfortunately, I can't find copper mem HS in local stores, at least for now..

Thanks, both of you!

[BAGZZlash]

RBE v1.12 is available!

Check out the changelog:

v1.12
- Added display for GDDR5 (for 4870 and future cards).
- Added check for corruption of GDDR5 BIOSes.
- Fixed bug with all voltages being "---".
- The lock for clock info is now unchecked by default.
- Added command line feature for automated BIOS loading.
- Added profile editor to edit CCC settings that can not be modified using the CCC.
- Added support for 4870 X2 (experimental).
- Fixed checked "pre-modified" checkbox on plain 4870 BIOSes.
- Added more clock info modes to meet the needs of Radeon mobility BIOSes.
- Improved some internal things.

Enjoy!

[Factotum]

RBE v1.12 is available!

Check out the changelog:

v1.12
- Added display for GDDR5 (for 4870 and future cards).
- Added check for corruption of GDDR5 BIOSes.
- Fixed bug with all voltages being "---".
- The lock for clock info is now unchecked by default.
- Added command line feature for automated BIOS loading.
- Added profile editor to edit CCC settings that can not be modified using the CCC.
- Added support for 4870 X2 (experimental).
- Fixed checked "pre-modified" checkbox on plain 4870 BIOSes.
- Added more clock info modes to meet the needs of Radeon mobility BIOSes.
- Improved some internal things.

Enjoy!

Nice!!! THX
i modify in profile editor Memory voltage and core clock 720MHz - it not work

[biohead]

Nice!!! THX
i modify in profile editor Memory voltage and core clock 720MHz - it not work

well d'oh.. CCC limit = 700.

[nanohead]

RBE v1.12 is available!

Check out the changelog:

v1.12
- Added display for GDDR5 (for 4870 and future cards).
- Added check for corruption of GDDR5 BIOSes.
- Fixed bug with all voltages being "---".
- The lock for clock info is now unchecked by default.
- Added command line feature for automated BIOS loading.
- Added profile editor to edit CCC settings that can not be modified using the CCC.
- Added support for 4870 X2 (experimental).
- Fixed checked "pre-modified" checkbox on plain 4870 BIOSes.
- Added more clock info modes to meet the needs of Radeon mobility BIOSes.
- Improved some internal things.

Enjoy!

You are a hacker extraordinaire!!! Thanks for all your effort, for real.

[vengance_01]

anyone having this issue. I flashed my card in XP to 720/1100 with the extra volts. Works fine. Score spits out around 14K in 06 with a Dual Core which is fine. Anyways I went to flash my card in Vista 32bit with winflash. Now I have a stutter like with something is not getting enough voltage. No artifacts. What do you guys think? Its not temps, but I think it has to do with Vista and trying to flash the card. I am gonna re-load XP and flash the card and then move back to Vista.

Edit**

To add I tried flashing in Dos Via atiflash and I get an error every time about SiI1930 something. Here is the error after using this command
atiflash -f -p -0 bios.bin
(Picture is not mine, but exact same error)

[laragirl83]

I have done the 1.263V BIOS mod, now running my 4850 @ 725/2100MHz!
Funny thing is, i have flashed this card several times, trying different settings, worked out fine, i was using XP!
Now i have Vista, and when I did the final flash with the final settings, after flashing screen have gone black, no response from computer, and one of the RED leds on the back of the card (there r 2 of them, at start up they flash up both) was on...
OMG, i was like, killed my card... so I pushed reset switch... pc turned of and on, screen came back, running nice and smooth!

[fenomenhaa]

Somebody wants to know quad:4ghz and 900core on 4850 so this is the answer
vgpu:1.48
vddr:2.05

[stangracin2]

use ati tray tools ---> advanced options ---> Multi-Thread Support enabled. 2 for dual cores and 4 for quads. This should allow for better cpu scaling.

where can i get ati tray tools

[cavarr]

google.com ??

[perkam]

Somebody wants to know quad:4ghz and 900core on 4850 so this is the answer
vgpu:1.48
vddr:2.05

Is that Crossfired 0_o !!!!

Perkam

[stangracin2]

google.com ??

the only ones i can find are from 06

[drizzt5]

It clearly states that Crossfire is disabled. Like an inch away from your question.

Nice score.