Overall Energy Consumption and Energy Saving

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These power consumption levels are calculated using all of the results and combinations in the test; the individual values have been added together. These values only show the tendency of the relevant component: the actual power consumption of the graphics card varies according to CPU, and in turn, the power consumption of the CPU varies depending on the graphics card.

If you wish to save power, you can switch from the Geforce 7 to the Geforce 9600 GT—this provides much more performance and only puts minimal extra load on the power supply. The Geforce 8800 GTS 512 OC is a little more efficient in 2D mode than the new Geforce 9800 GTX, but they are almost identical in 3D mode.

Power consumption GPU
for all combinations
2D watts
(Vista Desktop)
3D watts
(BlackSite)
8800 GTS OC (512 MB) 788 1554
9800 GTX (512 MB) 813 1534
8800 GT OC (512 MB) 723 1377
9600 GT OC (1024 MB) 637 1083
6800 GT (256 MB) 707 1045
7950 GT (512 MB) 600 995

The overclocking of the Q6600 can be seen clearly from the power consumption figures. The consumption of the E2160 barely increases, although the clocking has been raised by 33%.

Power consumption CPU
for all combinations
2D watts
(Vista Desktop)
3D watts
(BlackSite)
Q6600@3.2 853 1506
Q6600@2.4 749 1327
X6800EE@2.94 732 1298
E6750@2.67 658 1204
E2160@2.41 645 1149
E2160@1.8 631 1104


Talkback
david__t 16/05/2008 12:30
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david__t

Shock horror - video cards have a greater impact than CPUs overall on games! Matching your CPU to your GPU has been something that gamers have done for years to make sure that their graphics card was not hampered - since when has this ever been an "endless topic of conversation"? Its like asking whether a better clutch or bigger engine makes a car go faster or not - yes you need a decent clutch to put the power down, but that power comes from the engine. Come on THG - this is not up to your usual standard of asking interesting questions - if you want an endless topic of conversation, try the age old sync / async RAM operation issue.

ToTaL SHiT 16/05/2008 07:18
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ToTaL SHiT

The overclock potential of a cpu is far greater then a gpu.
The entry level cpu in a series have almost as much overclock potetial as a high end one, sometimes even more due to fsb clock.
The most bang for the buck is to had with a entry level cpu in a current series opverclocked, combined with the best grahics card in your budget (save money on cpu and put it towards gpu)

mackayde 18/05/2008 01:02
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mackayde

This review is fantastic. It is best for people who want to see difference between their current configuration and performance gains between old and new hardware per buck.
E.G. If someone has a 8600GT and a low spec CPU, it makes no sense to buy a new graphics card as this review coroborates the relation between GPU AND CPU.
Great stuff Tom's.

david__t 18/05/2008 09:54
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david__t

Why do you mention overclocking? Anyway, entry level CPUs have less cache and a slower bus speed - none of which can be gained back by overclocking - and then you have to spend loads on a good heatsink (for any clock speed increase worth talking about) which means you may as well have bought a better CPU in the first place.
Also, Mackayde, the fact that you said 'coroborates' makes my point for me - this is ground already covered - we all know that mid range goes with mid range etc... for the best bang for the buck & price/performance ratio.

Anonymous 21/05/2008 11:53
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These test are being made for people who have doubts about cpu/gpu performances, not all people are genius like you david t to know the differences among these 2 chips. Dont take yourself to be too intelligent by trying to contradict thg because I sincerely think you are not that intelligent, you a_sh_le

samuraiblade 16/07/2008 06:02
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samuraiblade

good for me to know as i have just upgraded to a dfi x48 board and e8400 , i currently have a 8800gt on it but as its a crossfire board im intending to get the 1gb 4870 when its released at the end of the month , my sons machine is an athlon 64 3ghz with pci-x , so it kills two birds with one stone as he can have my 8800gt and get a very good machine also in the process.

AleksandarTokarev 24/07/2008 08:41
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AleksandarTokarev

Great Review :)

Anonymous 12/08/2008 06:11
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"Anyway, entry level CPUs have less cache and a slower bus speed - none of which can be gained back by overclocking"

Err, of course you can make the bus speed faster by overclocking. What THG is suggesting is that the hit you get from using a cheaper CPU (i.e. less cache, lower bus speeds) can generally be dialled out by overclocking the CPU to death. i.e. run 3DMark on both, I bet you can easily get the same of better results from a lower prices CPU and many of the premium units.

Revonize 22/08/2008 12:16
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Revonize

Great article. At this moment i got very low spec CPU - P4 HT 3.0, ASUS P5KC mainboard, 4GB of Ram and HD 4850 graphics card. I am not very satisfied with overall performance of my machine. I want to upgrade a CPU but I was not sure what kind of performance boost i got. Now I know :) THX THG

g0ldf1sh 28/08/2008 07:11
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g0ldf1sh

Very useful article for me - in the process of component hunting for a new PC (upgrading from a P4 2.8, 6800GT (AGP) and 1gb of RAM - yep old stuff indeed) For me the fact the CPU needs to be around 3Ghz to get the best out of the Graphics card is the most useful bit of advice i could get right now, thanks THG

Anonymous 29/09/2008 12:52
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Its sad when "know it all" computer nerds stroke their e-peen by slagging off a feature that is almost definatly going to be useful to countless others.

Its people with david_t's attitude that give other techie types who may already know all this a bad name.

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