700mhz wall on HD4850 is smashed.

[DemonEyez]

160/500?

Mine is 500/750 core/mem in 2d mode. I am using the asus bios, but my HIS bios is the same as well.

He's right, the new MSI bios is version 011.004 and not 011.003 like your HIS and Asus bios.
It differs from the HIS and Asus (and other 003 biosses) that in 2d mode, the clocks are 160/500 and not 500/750. I think this is a better adaptation of Powerplay, I wouldn't be surprised if with this new 004 bios, the card only uses around 25W in idle mode

Just flashed the MSI 011.004 bios into my Asus. Just like the Asus 011.003 bios I can still run 700/2300 without errors/artefacts.
Right now I'm modding the MSI bios for higher 3D clocks, just to see if I can do 705MHz on the core.

[gurusan]

ASUS bios is from me I'm using MSI 011.004 but on stock volts I can't even do 670MHz, I get lots of driver crashes. How far can you go on stock volts?

I can do 700mhz on the core no problem with stock volts. I haven't tried the MSI yet because I am using the stock cooler temporarily and need the asus fan control.

[DemonEyez]

Modded my MSI bios 011.004 bios with succes.
Right now i'm at 710/1125 with stock voltage but with watercooling.

[JamesBong420]

im hoping some 900 mhz ownage.. imma pound some volts into her tonight. .......

[gurusan]

nice demoneyes....and very nice idle temp!

........and 900mhz would be sweetness. Good luck on that james and keep us posted.

[albon]

Keep in mind that 160 remains in new bios as long as Overdrive is Off. If you enable Overdrive the minimum frequency raises to 500, so overclock is only possible through bios modding if you wanna keep low 2D temps.

[Errik89]

there is a new version of RBE that are able to modify fan speed for 4850 and the 3d voltage??

I've a gigabyte 4850 with asus bios (for use smart doctor to control the fan) but my card with stock voltage can be overclocked only up to 675/1050, so I want to do pencil mod and then overclock my card up to 725/1050 or 750/1050. But I'm not able to use an hex editor so I need RBE...

[Caped Crusader]

Modded my MSI bios 011.004 bios with succes.
Right now i'm at 710/1125 with stock voltage but with watercooling.

dude! can I get a copy of that modded BIOS? I have a SAPPHIRE HD4850 with BIOS ver. 011.003

I can give you a copy of my BIOS as well, if you'd rather mod mine
thanks in advance!

here's my card BIOS for all of you: http://www.monocromatica.com/fez/RV770_SAPPHIRE.bin

Peace

[eddieobscurant]

i'd like your modded bios too. I've got the same card as caped crusader.

[jimmyz]

there is a new version of RBE that are able to modify fan speed for 4850 and the 3d voltage??

I've a gigabyte 4850 with asus bios (for use smart doctor to control the fan) but my card with stock voltage can be overclocked only up to 675/1050, so I want to do pencil mod and then overclock my card up to 725/1050 or 750/1050. But I'm not able to use an hex editor so I need RBE...

That is in the works, talked to him this morning. keep checking back, also I am considering posting some modded bios's in the first link if somebody has made some good ones, or ones that will raise the ccc limit like some of the 3850 bios's would.

Edited: W1zzard posted in TPU's RBE thread, confirms a new version is in the works and it includes fan control. http://forums.techpowerup.com/showpo...&postcount=270

[JamesBong420]

im at 875 mhz so far just put her at 1.51v to give me some headroom...

850 only needs 1.41v and its totally stable... BBL with an update

[adpr_02]

Wow. What cooling are you using? I wonder if that makes it better than a 4870....

Edit: Is there going to be a way to raise voltages and clocks through ATITOOL like I am able to now with my x1800xl? It is amazing being able to tweak it by just moving my mouse.

[JamesBong420]

900 mhz on an accelero S1 1.51v i have not tried for more.. almost 50k in 03 VERY bloated install..
http://www.hwbot.org/result.do?resultId=748596

[Battlestar]

Modded my MSI bios 011.004 bios with succes.
Right now i'm at 710/1125 with stock voltage but with watercooling.

Dude, Can I have a copy of your BIOS? Thanks

-battlestar

[BAGZZlash]

Hi everybody! Jimmyz, thanks for the invitation!
Okay, RBE v1.11 with fan support can be expected shortly, maybe today.

[gurusan]

900 mhz on an accelero S1 1.51v i have not tried for more.. almost 50k in 03 VERY bloated install..
http://www.hwbot.org/result.do?resultId=748596

Very impressive, and very well done!!!!!!!

[XCheater]

900 mhz on an accelero S1 1.51v i have not tried for more.. almost 50k in 03 VERY bloated install..
http://www.hwbot.org/result.do?resultId=748596

how do you do that? let me know?
the tutorial please

[XMoA]

900 mhz on an accelero S1 1.51v i have not tried for more.. almost 50k in 03 VERY bloated install..
http://www.hwbot.org/result.do?resultId=748596

super! nice nice!

what temps?...
is it stable :P ?

i will get one 4850 too! 625>900MHZ CORE ! almost 50% !!!!

[jimmyz]

Hi everybody! Jimmyz, thanks for the invitation!
Okay, RBE v1.11 with fan support can be expected shortly, maybe today.

Sweet now we have the author here!!! now to just get Gomeler to hurry up and get cards and we'll have a hell of a shootout.

[[XC] gomeler]

900 mhz on an accelero S1 1.51v i have not tried for more.. almost 50k in 03 VERY bloated install..
http://www.hwbot.org/result.do?resultId=748596

This frequency to voltage scaling makes me very happy. 1.65v for 1050Mhz I suspect, JUST like RV670 Go for that 1GHz on air JamesBong Have 2 cards by chance? Hope to see 110k 01, 100k 03, ~38k 05, and 30k 06

Sweet now we have the author here!!! now to just get Gomeler to hurry up and get cards and we'll have a hell of a shootout.

Maybe next week

[DemonEyez]

@Caped Crusader
@eddieobscurant
@Battlestar
Concering those bios requests: I'll post rapid share links this afternoon. Right now I'm at work.
Important!, I use watercooling. I wouldn't recommend going above 700MHz with the stock cooler

Did some further testing last night, but it seems that 710MHz on the core is the max with stock voltage for me.
715MHz gives me artefacts in AtiTool after 1 minute or so.
But I encountered something else.
It seems that the speedsteps for the overclocking the memory becomes rather large after a certain threshold.

When I set 1125MHz in bios, GPU-Z reports 1125MHz being used correctly
When I set 1135MHz in bios, GPU-Z reports 1125MHz being used
When I set 1140MHz in bios, GPU-Z reports 1125MHz being used
When I set 1145MHz in bios, GPU-Z reports 1125MHz being used
I recall I don't have that problem with Overdrive. When I set 1140MHz in Overdrive, GPU reports 1140MHz.

What's that about? Does driver level overclocking allow for smaller steps concerning mem speeds?


*edit* found something about the changing steps in a MSI HD4850 review on Techpowerup.com:

When changing memory clocks I noticed that the step size (with the software I used) is 25 MHz, so you can only OC to 1000 MHz, 1025 MHz and 1050 MHz - quite a limitation. After 1050 MHz the steps become smaller again.

http://www.techpowerup.com/reviews/MSI/HD_4850/24.html

Perhaps this pattern repeats itself at around 1100MHz

[Battlestar]

@DemonEyes- thanks bro, forgot to check that your using H2o on your 4850 right? Hmm I think the BIOS settings is not appropriate on air cooling like mine

[jimmyz]

@Caped Crusader
@eddieobscurant
@Battlestar
Concering those bios requests: I'll post rapid share links this afternoon. Right now I'm at work.

Did some further testing last night, but it seems that 710MHz on the core is the max with stock voltage for me.
715MHz gives me artefacts in AtiTool after 1 minute or so.
But I encountered something else.
It seems that the speedsteps for the overclocking the memory becomes rather large after a certain threshold.

When I set 1125MHz in bios, GPU-Z reports 1125MHz being used correctly
When I set 1135MHz in bios, GPU-Z reports 1125MHz being used
When I set 1140MHz in bios, GPU-Z reports 1125MHz being used
When I set 1145MHz in bios, GPU-Z reports 1125MHz being used
I recall I don't have that problem with Overdrive. When I set 1140MHz in Overdrive, GPU reports 1140MHz.

What's that about? Does driver level overclocking allow for smaller steps concerning mem speeds?

W1zzard reported the same thing, it seems that the memory scales in 25mhz jumps. so even though you can set it at different speeds it performs best at 25mhz jumps.

[DemonEyez]

@DemonEyes- thanks bro, forgot to check that your using H2o on your 4850 right? Hmm I think the BIOS settings is not appropriate on air cooling like mine

Yes, i use a Swiftech MCW60 to cool things down with H20. I wouldn't with just stock cooler.

[[XC] gomeler]

@Caped Crusader
@eddieobscurant
@Battlestar
Concering those bios requests: I'll post rapid share links this afternoon. Right now I'm at work.
Important!, I use watercooling. I wouldn't recommend going above 700MHz with the stock cooler

Did some further testing last night, but it seems that 710MHz on the core is the max with stock voltage for me.
715MHz gives me artefacts in AtiTool after 1 minute or so.
But I encountered something else.
It seems that the speedsteps for the overclocking the memory becomes rather large after a certain threshold.

When I set 1125MHz in bios, GPU-Z reports 1125MHz being used correctly
When I set 1135MHz in bios, GPU-Z reports 1125MHz being used
When I set 1140MHz in bios, GPU-Z reports 1125MHz being used
When I set 1145MHz in bios, GPU-Z reports 1125MHz being used
I recall I don't have that problem with Overdrive. When I set 1140MHz in Overdrive, GPU reports 1140MHz.

What's that about? Does driver level overclocking allow for smaller steps concerning mem speeds?


*edit* found something about the changing steps in a MSI HD4850 review on Techpowerup.com:


http://www.techpowerup.com/reviews/MSI/HD_4850/24.html

Perhaps this pattern repeats itself at around 1100MHz

*shrug* not too much of an issue, gotten pretty used to pushing GPUs in chunks. Does RV770 have the same ~30MHz jumps like RV670 or are the steps more refined? edit: in regards to GPU speeds.