ATI 5750/5770 voltmod thread

[Theorw]

Theorw, did I get it wrong or You turned 100k VR to 2,1k before soldering?

No man!!!Are u serious???
The resistor to solder on was 2,1koms ,the VR i used was 100k set to max resistance when soldered!
Got it?!

[Theorw]

no i have just vgpu
with def mem voltage u can run over 1320 without problem, but it's risk on hynix

I think i ve found something for the vMEM mod but i am not sure...I will post tomorrow but i need someone willing to risk verifying it!

[thijs]

no i have just vgpu
with def mem voltage u can run over 1320 without problem, but it's risk on hynix

ah k, well just doubting if i should stick with softmod or go with hardmod on the core, need to test how stable the softmod is, ill solder in some messurement points tomorrow.

[ceemic]

Theorw, OK sry, I read wrong

[thijs]

ah k, well just doubting if i should stick with softmod or go with hardmod on the core, need to test how stable the softmod is, ill solder in some messurement points tomorrow.

just small edition to myself, im not having higher GT3's in vista ultimate so far, havent tweaked the OS yet, but so far im getting similair FPS with same clocks in XP, something i've missed? using the 8.11 beta driver

[pr@$r1g]

Hello Dear Sir & Pro's
Please help me out
thanks

can any differ
what is pencilmod ?????
&
what is vmod ?????
Im confused
Never done it but will do with this card ,when it arrives

[Theorw]

well i resoldered the VR and i tried some OCing today.What i found out is that with the VR configuring the volts,the voltage is extremely stable like 0.002 change during gameplay...
I managed to have 1000core on 1,298-1,301 volts while on softmod i set 1,264 but it was actually more that 1,31...measured with DMM.
So when u say i have 1000core with 1,2volts its more like 1,25...
The most important think i found is that after some voltage,i dunno what exactly yet the card wont post!!!I mean i left the VR set to some middle resistance and the card wouldnt boot but after i set it a bit higher it booted no problem.
Do u think there might be some OVP the chip does?????It was higher than 1,33 i think...

[hiwa]

i tried up to 1.40/1 and didn't catch OVP
over 1.35 no gain in my case need cold to found the limit

[Theorw]

i tried up to 1.40/1 and didn't catch OVP
over 1.35 no gain in my case need cold to found the limit

Thanks,nice to hear!
Will try some OC tonight...Gonna play WOLFENSTEIN now!!!

[thijs]

tweaked my windows 7, but still getting like 1/2 fps less on GT3 then xp, same clocks.
really odd... ill try some other drivers aswell

[hiwa]

tweaked my windows 7, but still getting like 1/2 fps less on GT3 then xp, same clocks.
really odd... ill try some other drivers aswell

i'll check my run later and try it again, my SM3 is 11XXX and it's impossible i think
should be some bug in my run too

[Theorw]

Well i cant seem to pass any 3dmark @1040 with the asus bios.I hardmodded and i have ultra stable 1,349-1,352volts core but i cant pass 1040.
This is strange though cos i posted on hwbot 27k on 3d05 @1040 with the stock bios but cant find it now...
I might have the crapiest 5770 for OC...

i'll check my run later and try it again, my SM3 is 11XXX and it's impossible i think
should be some bug in my run too

Whta brand is your 5770?can u post your bios please?

no i have just vgpu
with def mem voltage u can run over 1320 without problem, but it's risk on hynix

I can run mine @1400 without problems stable but i have heatsinks on the back side and a 230mm side intake!!!
u guys dont cool your chips???
I saw in a russian review that mem chips get 90 degrees on stock!!!

[hiwa]

sapphire original bios
http://www.techpowerup.com/vgabios/i...ace=&memSize=0
clock with amd gpu clock without any problem

120mm fan 3000RPM on back memories

[Theorw]

Thanks pal!Nice idea with the 120mm!!!But its ghetto:P
Mine is neat!!!

[LyP0]

i can run 960/1445 totaly stock.
my score's are quite low
45k 03 stock
52k 03 oc'ed
15k 06 stock
16k 06 oc'ed

[Theorw]

Well your scores are OK!
Its your CPU that needs the boost!U need at least 0,5 GHz more to have bigger scores...
I have 4,5ghz and i get 58k so that our difference...@1000mhz core but 40mhz dont give 6k more...

[LyP0]

its not the rig in my sig.
i'm running a E5200 @ 4.1, ddr2 around 700mhz with loose timings.
really need to get a new setup, this sucks.
Has anyone tried 6ghz mem ? i read some reviewer managed to get it up to 6 but they didn't say anything about bench stable.

[Theorw]

w1zzard from techpowerup manged 6ghz and said it was bench stable.The average OC on the mem is 5600mhz...(1400)

[Riska]

I have tryed cold air on to the mem and it helps alot did 1525 stable on default vmem

[Theorw]

really?Cold air via what?A/C?

[Riska]

No big fan and open window and outside temp at 2-3c

[Theorw]

No big fan and open window and outside temp at 2-3c

Clever!!!!I thought once of using a tube like 2 meters long driving cold air from outside the window directly on the intake fan!!!Would be nice but i am bored of actually doing it...

[hiwa]

Funny !!

1140/1380 1.40

[pvhk]

very nice!
My sapphire w/asus bios & softmod stock cooling:

[TiN_]

Theorw

Adding extra capacitors is for lowering ESR (series resistance). More caps > more energy stored > more current ripple can be filtered. If you add caps with long wires, + thin wires => you will add MORE parasitic resistance and noise to power planes, that without caps. It's totally stupid idea, to use that long wires from you first pic, sorry

http://en.wikipedia.org/wiki/Equival...ies_resistance