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Overclocking the 780G/HD3200

post #1 of 36
Thread Starter 
AMD Athlon X2 4200+ Brisbane 65W
Gigabyte GA-MA78GM-S2H
Micron 4x1GB DDR2-667
Vista Premium 64 (Pre-SP1)


Below are the 3DMark06 results of various configurations. I ran the benchmark only once for each setting so remember that 3DMark scores can fluctuate a bit. From the performance, the HD3200 seems to limited by memory speeds. Gigabyte (like most manufacturers) does not implement the optional dedicate memory for the HD3200. To boost performance, increasing the HyperTransport clock and using faster memory yields a definite performance increase. Since I am using an AM2 processor, the HT defaults to 1GHz. This motherboard is a AM2+ and supports HT3 at 2.6GHz when using a Phenom processor. I am a bit surprised my GPU could not run stable at 700MHz. Most reports have it able to do 900MHz overclocked and even up to 1200MHz.


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post #2 of 36
wow thats a nice on board chip
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post #3 of 36
I wonder what the sweetspot is for VRAM for that chip for HD playback. It looks like in terms of VRAM for 3dMark is 128mb.
post #4 of 36
Thread Starter 
Quote:
Originally Posted by will25u View Post
I wonder what the sweetspot is for VRAM for that chip for HD playback. It looks like in terms of VRAM for 3dMark is 128mb.
From the charts, the GPU needs over 64MB for 1280x1024 3DMark06. After that, it levels off. It is safe to say there is no performance difference for 128, 256, or 512MB at that resolution. I can't run 3DMark at higher resolutions but 128MB or 256MB should be fine.
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post #5 of 36
In case antone wants to see here is TomsHardware review of this chipset

http://www.tomshardware.com/2008/03/..._780g_chipset/

Looks like a great option for htpc
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post #6 of 36
I have the same motherboard. Perhaps duckie would like some more data for his pretty chart?
    
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post #7 of 36
I'm not going to overclock mine. I don't need more heat in my case and it's strictly a HTPC. No gaming.
post #8 of 36
I just did a baseline 3DMark with the Phenom 9500 at stock clocks and 1.8Ghz HT link and 4 (2x2) GB of DDR2-800 I'm getting 1297 3DMarks. I'm going to give her a reboot, experiment with some things and see how far she'll go. The tests are done on Vista Premium 64 pre SP1 like duckie above.

Edit: Realized I was running at DDR-800 5-5-5-15.

Test1: Phenom 9500 CnQ enabled, 1800HT, 2x2 DDR2-800 5-5-5-15, GPU 500Mhz memory buffer auto1297 3DMarks

Test2: Phenom 9500 CnQ enabled, 1800HT, 2x2 DDR2-1066 5-7-7-20, GPU 500Mhz memory buffer auto1354 3DMarks

Test3: Phenom 9500 CnQ enabled, 2000HT, 2x2 DDR2-1066 5-7-7-20, GPU 500Mhz memory buffer auto App Crash...

Test4: Phenom 9500, 1800HT,memory controller 2000Mhz, 2x2 DDR2-1066 5-7-7-20, GPU 500Mhz memory buffer 256MB

Next, Test let's see how the NB/HT clocking goes...
    
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post #9 of 36
Okay... So I've spent the last couple of hours with this board and cannot figure a thing out... I'm not having much luck getting anything stable, so I'm going to get some assistance.
    
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post #10 of 36
Thread Starter 
Quote:
Originally Posted by RonindeBeatrice View Post
Okay... So I've spent the last couple of hours with this board and cannot figure a thing out... I'm not having much luck getting anything stable, so I'm going to get some assistance.
What stepping do you have? A11, A12, or A13?

http://www.overclock.net/htpc/312235...-stepping.html
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Intel X25-M 160GB + 3xRAID0 500GB 7200.12 Window 7 Pro 64 Acer H243H + Samsung 226BW XARMOR-U9BL  
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