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COOLING
As each board has a more elaborate cooling system than most, a short investigation
was conducted to see which kept their various components cooler.
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Heatsink Temperatures
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Critera
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Gigabyte 790GP-DS4H
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DKA790GX Platinum
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Southbridge
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47°C
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57°C
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Northbridge
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75°C
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68°C
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VRM
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65°C
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69°C
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Measured with infrared thermometer after 15m
of full CPU + GPU load with CPU fan reduced to 6V.
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Assuming that thermal contact was equal, we can infer that the heatpipe connections
are primarly responsible for the differences in the various temperatures recorded.
The MSI board's southbridge and northbridge are connected, resulting in a higher
southbridge and lower northbridge temperature as the heatpipes help even the
difference. Its VRMs however, with no extra help from the heatsink covering
the north/southbridge run slightly hotter than the Gigabyte's northbridge-connected
VRM heatsink. Both boards kept the components adequately cool in our airflow
deprived testing station. We've seen temperatures 90°C and higher in the
past.
3D PERFORMANCE
To get an idea of how well each board's integrated graphics plays
games, we ran 3DMark05/06. As synthetic benchmarks they have limited value,
but they give a rough idea of how well an IGP performs.
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3D Performance: Futuremark Comparison
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Motherboard
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Graphics
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3DMark05
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3DMark06
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Asus M3N78 Pro
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GF8300
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1669
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902
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Asus P5Q-EM
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GMA X4500
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1708
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1092
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Gigabyte MA78GM-2SH
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HD 3200
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2293
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1116
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Gigabyte MA790GP-DS4H (Sideport)
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HD 3300 (Sideport)
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3377
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1668
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Gigabyte MA78GM-2SH
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HD 3450
(Discrete)
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3405
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1716
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MSI DKA790GX Platinum
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HD 3300 (Sideport)
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3542
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1719
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Asus P5N7A-VM
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GF9300
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3497
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1776
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All results with 2GB of system RAM and 256MB of
VRAM assigned for IGP's (128MB Sideport + 128MB UMA for boards with Sideport
memory). Intel (E7200) systems in blue, AM2 (X2 4850e) systems in green.
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Both boards scored very well in 3DMark, more or less matching the Asus
P5N7A-VM with its GeForce 9300 IGP. The MSI board edged out the Gigabyte. None of the top IGPs in this list are good candidates for
modern gaming, but they are good enough to be used in place of a low-end discrete
card such the as the Radeon HD 3450.
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