31 replies to this topic

[Luminati]

Introduction : My 8600m gt died on acer 5920 -> I've bought HD 3650 from e-bay (256m gddr3, original hp bios attached) -> installed it into my laptop (new heatpad for chip, original 8600m heatpads for mem) -> downloaded catalyst 8.12 -> modded with MobilityModder.NET + changed mem size to 256mb -> installed catalyst.

Bought a new heatpad for chip (17 W/mK) from store@mxm-upgrade to achieve better chip cooling. I get 81C on a chip after its installation.

Overclocking:
0) Laptop: acer 5920G, T7300 2.0Ghz, 2Gb RAM, 160HDD, 1 Gb Turbo Mem, HD 3650 video.
1) How-to: downgrade to catalyst 8.10 and set clocks using AMD GPU Clock HIGHER than 600Mhz for engine and 700Mhz for memory and values won't reset back ;-) Cheers.
2) Original clocks (e600/m700) give me 4310 3DMark2006 points which is the maximum I could get with my 8600m GT 512mb DDR2. Nice.
3) Overclocked to e756/m765 @ 95 C -> 5057 3DMark2006. Without changing voltage settings.
4) After setting voltage to 1.2 (using RBE) I can push engine beyond 765Mhz, but this produces too much heat Anyway, e810/m765 @ 107 C -> 5180 3DMark 2006 points.

(new) Undervolting T7300:
1) Google for "The Undervolting Guide". There you'll find detailed description on lowering power consumtion and heat generated by your CPU.
2) My new settings for Intel Core 2 Duo T7300: x10 - 1.025V vs 1.25V, x6 - 0.85V vs 1.25V
3) Results: 62-65 C on CPU vs 80-85 C and as a result 82-88 C vs 95 C on GPU. Of course this allows more GPU overclocking, but I'd rather stay with lower temperature than continue with overlocking.

Tools I've used:
1) MobilityModder.NET 1.1.0 - to modify latest catalyst
2) ATIWinflash 2.0.1.5 - to flash bios
3) RBE (Radeon BIOS editor) 1.18 - to modify/update bios
4) HWMonitor 1.12 - log temperature
5) AMD GPU Clock Tool 0.98 - change clocks, see temp
6) RMClock - for undervolting

Collection of all ATI HD 3650 256mb gddr3 bios-s I've found is attached:
1) HP_Wistron_Vox_M86M_10.88.28354_original.rom (Original ROM of my HD 3650)
2) Acer_MXM_M86ME_DDR3_11.00.27693.rom
3) HP_Wistron_Vox_M86M_10.88.28604_FGL.rom
4) HP_Wistron_Vox_M86M_11.00.27062.rom

Score formula used by 3DMark 2006:
3dMark Score = 2.5 x 1.0/((1.7/GS + 0.3/CPU Score)/2), where
1) CPU Score = 2500 x sqrt (CPU1 fps x CPU2 fps)
2) GS (for hardware capable of running all tests) = 0.5 x (SM2S + HDRSM3S)
3) GS for hardware capable of running only SM2.0 graphic tests = 0.75 x SM2S

Attached Files

•  hd3650_256mb_gddr3.zip   159.3K   917 downloads

Edited by Luminati, 17 February 2009 - 12:54 PM.

[karajan]

very useful article!!

Introduction : My 8600m gt died on acer 5920 -> I've bought HD 3650 from e-bay (256m gddr3, original hp bios attached) -> installed it into my laptop (new heatpad for chip, original 8600m heatpads for mem) -> downloaded catalyst 8.12 -> modded with MobilityModder.NET + changed mem size to 256mb -> installed catalyst.

Going to buy a new heatpad for chip (17 W/mK) from store@mxm-upgrade to achieve better chip cooling.

Overclocking (in process) :
0) Laptop: acer 5920G, T7300 2.0Ghz, 2Gb RAM, 160HDD, 1 Gb Turbo Mem, HD 3650 video.
1) How-to: downgrade to catalyst 8.10 and set clocks using AMD GPU Clock HIGHER than 600Mhz for engine and 700Mhz for memory and values won't reset back ;-) Cheers.
2) Original clocks (e600/m700) give me around 4300 3DMark2006 points which the maximum I could get with my 8600m GT 512mb DDR2. Nice.
3) Tested e742.5/m765 -> 4981 3DMark2006.

Tools I've used:
1) MobilityModder.NET 1.1.0 - to modify latest catalyst
2) ATIWinflash 2.0.1.5 - to flash bios
3) RBE (Radeon BIOS editor) 1.18 - to modify/update bios
4) HWMonitor 1.12 - log temperature
5) AMD GPU Clock Tool 0.98 - change clocks, see temp

Collection of all ATI HD 3650 256mb gddr3 bios-s I've found is attached:
1) HP_Wistron_Vox_M86M_10.88.28354_original.rom (Original ROM of my HD 3650)
2) Acer_MXM_M86ME_DDR3_11.00.27693.rom
3) HP_Wistron_Vox_M86M_10.88.28604_FGL.rom
4) HP_Wistron_Vox_M86M_11.00.27062.rom

[Luminati]

hello,
when you say that you have OC the memory to 765, you mean (765x2) = 1539 Mhz???

I know that the ati HD 3650 256 Gdd3 mounts qimonda memories that are 800 native --> 1600Mhz???
you can confirm?
thank you.

1. Original memory clock was 700 Mhz (693 Mhz actually) and i put it to 765 Mhz. Thats it. I don't know if its 765*2 or 765*1 or whatever...

2. Yes, my hd 3650 256 gddr3 card is equiped with 800 Mhz qimonda memory (I've checked by part number).

[eugene2878]

1. Original memory clock was 700 Mhz (693 Mhz actually) and i put it to 765 Mhz. Thats it. I don't know if its 765*2 or 765*1 or whatever...

2. Yes, my hd 3650 256 gddr3 card is equiped with 800 Mhz qimonda memory (I've checked by part number).

I overclocked mine to 800/880. 6000+ poinds in 3dmark 06. Faster than 9700m gt. Bought mine for 100£ comparing to 9600gt for 200£ and 9700mgt for 300£.

Edited by eugene2878, 05 January 2009 - 05:16 PM.

[Kayldera]

I overclocked mine to 800/880. 6000+ poinds in 3dmark 06. Faster than 9700m gt. Bought mine for 100£ comparing to 9600gt for 200£ and 9700mgt for 300£.

What are your temps?

[SirKhan]

I overclocked mine to 800/880. 6000+ poinds in 3dmark 06. Faster than 9700m gt. Bought mine for 100£ comparing to 9600gt for 200£ and 9700mgt for 300£.

Any modifications to the heating system required in order to do that? Also, what CPU do you have please?
Thanks for the infos.

[Luminati]

very beautiful work

can you say to me, what are your gpu temps. without oerclock in 1h gaming ???

81 C with Cooler Master NotePal cool pad turned on.

[Luminati]

You can of course try the latest 9.1 catalyst, but I don't think its gonna dramatically change your card's performance.

By the way, if you really want to see a decent performance increase - overclock you gpu's engine.

Edited by Luminati, 05 February 2009 - 11:30 AM.

[eugene2878]

Any modifications to the heating system required in order to do that? Also, what CPU do you have please?
Thanks for the infos.

I have Amilo xi1546 with alienware 1.19 bios , T7400 cpu, hd3650 256mb. I have modifaed ati bios in order to provide higher voltage for core and memory. Cpu is undervolted. Hwmonitor shows temp around 75C.

[Luminati]

I have Amilo xi1546 with alienware 1.19 bios , T7400 cpu, hd3650 256mb. I have modifaed ati bios in order to provide higher voltage for core and memory. Cpu is undervolted. Hwmonitor shows temp around 75C.

Can you share more details on this? How and to what value did you undervolt your T7400? What voltage did you set for hd3650?

for eugene and luminati


can you tell me exactly how many points you get to 3dM06 with default gpu and memory at 800Mhz (native clock of GDDR3) because I want to make a comparison with the nvidia 9600m gt

many thanks

All I can tell is that 693Mhz (default) gives me 4310 points and 765Mhz - 4365. So I guess 800Mhz would give something around 4400 on my platform.

I hope you do understand that 3dMark score takes also CPU score into account. You can see actual formula in the Post #1.

[Kayldera]

Don't forget about the drivers you are using: I pushed my card the 750/880 and with the 8.10 I obtained 4700 pts but as soon as I upgraded to the 9.1 my score dropped to 4500... But I can finally play mass effect at 1680x1050 with everything high with no lag at all and my card only reach 85C so I'm pretty happy with it though I had to push the voltages to 1.2v in 3d mode to keep it stable.

Edited by Kayldera, 08 February 2009 - 04:49 PM.

[Luminati]

yes i beive to your score, but you have oc both the gpu and mem , but the nvidia 9600m gt ddr2 is more powerful my friend obtain 4600 pt with cpu intel c2d 1.8ghz and 3gb ram without any oc!

i hoped that the ati 3650 with gddr3 800x2mhz was = at nvidia 9600m gt ddr2, but it is not this way

Yes, 9600m gt is initially faster than ati 3650. Thats it.

TO EVERY ENTHUSIAST:
Undervolting your CPU is highly recommended when overclocking GPU and in many other scenarios. Check first post for more details.