NVIDIA MCP67M-A2 Volt Mod via pencil or tiny dot of solder help - GSM-Forum

chris89 · 01-15-2013, 15:54

I've got a MCP67M-A2 (7150M) and I've been playing around with it a lot got a vga bios mod on it for 0.86v in 2d from 1.1v and 555Mhz from 425Mhz in 3d and it's limited to 1.2v since anything beyond 1.2v doesn't yield any more overclock. It shouldn't be too hard to figure out which chip will increase the 3d voltage above 1.2v right? I pencil modded my 4850 and it's stable at 800Mhz from 700Mhz so I figured it's not hard just gotta know which one to mod.

Any way to have the video card share more than 128MB? I know for a fact it is a limiting factor. Once I got DDR2-800 and Overclocked my Turion 64 X2 TL-68 2.4Ghz to 2.6Ghz and the ram went up to DDR2-867 I got an instant 20fps increase just from the cpu overclock alone since the overclock yielded a lot more memory bandwidth. From 425Mhz to 555Mhz yielded an additional 10-15fps boost so all games are playable now. I can even run Unreal Tournament 2004 at 1280x800 and everything on as high as it will go at 35fps.

If I could get a volt mod to boost it past 1.2v I could get 600-650Mhz out of this little puppy!

I notice the 128MB of shared memory is performing quite well since my system memory bandwidth is so high. The PRIMARY bottleneck for resolution is the limit of 128MB of shared video memory. If I could boost the shared memory to 1GB I could get some decent resolution framerate since the 7150M in itself is not a bad gpu. I monitor gpu memory usage and at anything above 640x480 it's tacked to 100% on Insane 2. At 320x240 it uses only 80-90MB and I get like 40-50fps. So does anyone know which Hex string in the vga bios contains the information for the Shared Memory amount? Since there's an option in the BIOS and it's only 64MB or 128MB. I don't think it's impossible to change this amount. I'm waiting on a response from an Nvidia Engineer to give me more info.

Thanks

Dan Collins · 01-20-2013, 22:58

I am surprsided you haven't overheated the GPU. Most people try to lower the voltages and underclock the GPU for exactly this reason. Good luck.

01-15-2013, 15:54	#1 (permalink)
chris89 Junior Member Join Date: Jan 2013 Posts: 4 Member: 1868894 Status: Offline Thanks Meter: 0	NVIDIA MCP67M-A2 Volt Mod via pencil or tiny dot of solder help I've got a MCP67M-A2 (7150M) and I've been playing around with it a lot got a vga bios mod on it for 0.86v in 2d from 1.1v and 555Mhz from 425Mhz in 3d and it's limited to 1.2v since anything beyond 1.2v doesn't yield any more overclock. It shouldn't be too hard to figure out which chip will increase the 3d voltage above 1.2v right? I pencil modded my 4850 and it's stable at 800Mhz from 700Mhz so I figured it's not hard just gotta know which one to mod. Any way to have the video card share more than 128MB? I know for a fact it is a limiting factor. Once I got DDR2-800 and Overclocked my Turion 64 X2 TL-68 2.4Ghz to 2.6Ghz and the ram went up to DDR2-867 I got an instant 20fps increase just from the cpu overclock alone since the overclock yielded a lot more memory bandwidth. From 425Mhz to 555Mhz yielded an additional 10-15fps boost so all games are playable now. I can even run Unreal Tournament 2004 at 1280x800 and everything on as high as it will go at 35fps. If I could get a volt mod to boost it past 1.2v I could get 600-650Mhz out of this little puppy! I notice the 128MB of shared memory is performing quite well since my system memory bandwidth is so high. The PRIMARY bottleneck for resolution is the limit of 128MB of shared video memory. If I could boost the shared memory to 1GB I could get some decent resolution framerate since the 7150M in itself is not a bad gpu. I monitor gpu memory usage and at anything above 640x480 it's tacked to 100% on Insane 2. At 320x240 it uses only 80-90MB and I get like 40-50fps. So does anyone know which Hex string in the vga bios contains the information for the Shared Memory amount? Since there's an option in the BIOS and it's only 64MB or 128MB. I don't think it's impossible to change this amount. I'm waiting on a response from an Nvidia Engineer to give me more info. Thanks

01-20-2013, 22:58	#2 (permalink)
Dan Collins Freak Poster Join Date: Jan 2007 Posts: 210 Member: 437621 Status: Offline Thanks Meter: 19	I am surprsided you haven't overheated the GPU. Most people try to lower the voltages and underclock the GPU for exactly this reason. Good luck.