Power Draw
So far we've determined a couple things. First of all, the Pentium D 805 offers better performance overall in the value segment -- in general application performance it's especially difficult to argue with the second processor core. We've also found that an X2 3800+ is still going to be faster than the best that the Pentium D 805 can muster, especially once you throw in overclocking. In another month, the price disparity will drop from $200 to only $50, so if you're not in any hurry to upgrade you'll be able to get better performance for about the same price. (The cheapest Core 2 Duo chip should also be pretty interesting, though it will be priced slightly higher than the X2 3800+ once it is launched. We'll have to wait to see how that chip overclocks.)
Of course, NetBurst processors have a history of running very hot and requiring a lot of power. They've earned that reputation, but just how big of a difference is there between the various platforms? We measured system power draw with the computer sitting idle at the Windows desktop for 15 minutes or more, and we also tested them under a full load. Full load was achieved by running one or two instances of Folding@Home (depending on whether or not a dual core processor was installed) and then we ran the Splinter Cell: Chaos Theory lighthouse demo.
While we didn't provide specific results here, temperatures and noise levels are also impacted by power consumption. Higher temperatures are a given, as most of the power that goes into a computer turns into heat. That in turn requires fans to remove the heat, which leads to higher noise levels. If you're using fans that are always running at full speed, you might not notice the difference, but with most motherboards now sporting temperature controlled fan speeds, lower noise levels are easier to achieve with cooler running components. It is still possible to build a generally quiet computer using a hotter processor, but it ends up costing more.
Not surprisingly, the dual core chips require more power than the single core chips. If you've ever doubted the claims that Pentium D processors make for great space heaters, we have once again confirmed NetBurst's place as one of the toastiest architectures on the planet. The extra 20-80 Watts of power (depending on load and overclocking) that the Pentium 805 consumes relative to the X2 3800+ means that an upgrade to Athlon X2 will pay for itself in a couple years once we get $150 X2 chips -- assuming you run the system 24/7 under a heavy load, which may or may not be likely. Again, we will have to wait for Core 2 Duo to officially launch before we can make any more comparisons to that platform, unfortunately.
Long-term, you are better off buying a more power efficient processor. If you're more interested in short-term savings, however, or if you happen to live in a colder climate where the added heat would be welcomed, the Pentium D 805 is still very attractive. Many of the other Pentium D chips also have great prices, and you also get support for faster bus speeds with chips like the 820 and 930. Most people are going to be concerned with performance first and power requirements second, which makes sense when you consider how many people spend $40 or more per month on high-speed Internet connections. If you're looking to save money but still get a lot of performance, and especially if you run applications that can take advantage of multiple processor cores, the power requirements of the Pentium D are high, but not enough to dissuade us from purchasing the chips. That leads us to our concluding remarks.
So far we've determined a couple things. First of all, the Pentium D 805 offers better performance overall in the value segment -- in general application performance it's especially difficult to argue with the second processor core. We've also found that an X2 3800+ is still going to be faster than the best that the Pentium D 805 can muster, especially once you throw in overclocking. In another month, the price disparity will drop from $200 to only $50, so if you're not in any hurry to upgrade you'll be able to get better performance for about the same price. (The cheapest Core 2 Duo chip should also be pretty interesting, though it will be priced slightly higher than the X2 3800+ once it is launched. We'll have to wait to see how that chip overclocks.)
Of course, NetBurst processors have a history of running very hot and requiring a lot of power. They've earned that reputation, but just how big of a difference is there between the various platforms? We measured system power draw with the computer sitting idle at the Windows desktop for 15 minutes or more, and we also tested them under a full load. Full load was achieved by running one or two instances of Folding@Home (depending on whether or not a dual core processor was installed) and then we ran the Splinter Cell: Chaos Theory lighthouse demo.
While we didn't provide specific results here, temperatures and noise levels are also impacted by power consumption. Higher temperatures are a given, as most of the power that goes into a computer turns into heat. That in turn requires fans to remove the heat, which leads to higher noise levels. If you're using fans that are always running at full speed, you might not notice the difference, but with most motherboards now sporting temperature controlled fan speeds, lower noise levels are easier to achieve with cooler running components. It is still possible to build a generally quiet computer using a hotter processor, but it ends up costing more.
Not surprisingly, the dual core chips require more power than the single core chips. If you've ever doubted the claims that Pentium D processors make for great space heaters, we have once again confirmed NetBurst's place as one of the toastiest architectures on the planet. The extra 20-80 Watts of power (depending on load and overclocking) that the Pentium 805 consumes relative to the X2 3800+ means that an upgrade to Athlon X2 will pay for itself in a couple years once we get $150 X2 chips -- assuming you run the system 24/7 under a heavy load, which may or may not be likely. Again, we will have to wait for Core 2 Duo to officially launch before we can make any more comparisons to that platform, unfortunately.
Long-term, you are better off buying a more power efficient processor. If you're more interested in short-term savings, however, or if you happen to live in a colder climate where the added heat would be welcomed, the Pentium D 805 is still very attractive. Many of the other Pentium D chips also have great prices, and you also get support for faster bus speeds with chips like the 820 and 930. Most people are going to be concerned with performance first and power requirements second, which makes sense when you consider how many people spend $40 or more per month on high-speed Internet connections. If you're looking to save money but still get a lot of performance, and especially if you run applications that can take advantage of multiple processor cores, the power requirements of the Pentium D are high, but not enough to dissuade us from purchasing the chips. That leads us to our concluding remarks.
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JarredWalton - Monday, July 10, 2006 - link
Drop the $180 GPU and throw in a $50 GPU and you've got a non-gaming platform.mino - Wednesday, July 12, 2006 - link
Wrong,i.e.: changes to make 754 config a good budget PC:
drop DFI MB, drop the GPU, put in quality ATI Xpress200 or Geforce 6100 MB
drop that dual channel Patriot nonsense for singel channel s754, put in Kinkston/
Corsair 1GB stick of DDR400 CL3
drop that insane 400W PSU(100W system), drop in budget case, drop in FSP300-60GLN
example:
CPU: Sempron 2800+ ~$50
MB: JetWay A200GDMS ~$70 or some Geforce6100 board
RAM: 1GB brand DDR400 ~$90
HDD: any 250G ~$80
DVD: NEC 4571 ~$35 or any you like
case: ASUS TM250 ~$30 or any generic case without PSU
PSU: FSP300-60GLN ~$30
Final price: <= $400
You can drop some better GPU later but such a system will be with you for a long time.
As someone wrote above, your configs are good budget GAMER/OVERCLOCKER choices. Not budget PC choices.
JarredWalton - Wednesday, July 12, 2006 - link
But I would quantify my system as a "better" budget system - the extra $200 or so goes a long ways towards improving features and performance. Again, you don't *have* to buy these systems, but they are what I had available and you can see performnace (stock and OC'ed). It's something a bit different from our regular budget buyers' guides.mino - Thursday, July 13, 2006 - link
Almost forgot,I really appreciated the review, realy.
Just not for the text part, instead for the numbers and mostly the configs being tested.
mino - Thursday, July 13, 2006 - link
IMHO we have a common attitude for system config creation. But a different view on what a budget PC is. For me, it is a -as cheap as possible- workhorse, for you, a gaming machine able to work.My intention was just to show off that it is not so simple - like change the GPU and it is a classic budget system. IMHO you know that it is more complicated, but many readers do not(an the article supports them here).
the message:
"To build a good, balanced PC is a system solution problem, not a component solution one."
Best regards.
mino - Wednesday, July 12, 2006 - link
Wrong,i.e.: changes to make 754 config a good budget PC:
drop DFI MB, drop the GPU, put in quality ATI Xpress200 or Geforce 6100 MB
drop that dual channel Patriot nonsense for singel channel s754, put in Kinkston/
Corsair 1GB stick of DDR400 CL3
drop that insane 400W PSU(100W system), drop in budget case, drop in FSP300-60GLN
you've got:
CPU: Sempron 2800+ $50
MB:
mino - Wednesday, July 12, 2006 - link
this post was unintentional, gog give us EDIT :)Josh7289 - Monday, July 10, 2006 - link
So, the Pentium D's are going even lower, when the X2's lower as well? What about the other single cores from Intel and AMD, are they lowering with Core 2 Duo's launch?Looking back at that article from one and a half years ago. it's pretty cool to see what one can get today for less money than what one could get back then. I remember reading that article last year shortly before I built the PC I use now and using it as a kind of guideline, even though it was a few months old then.
Anyway, this spell check on Firefox 2.0 Beta 1 is freaking sweet. :)
PC Surgeon - Monday, July 10, 2006 - link
The review overall was very good. But I do have one problem and it has to do with this statement:
"Still, we're inclined to recommend socket AM2 right now, as we have yet to see any budget socket 775 motherboards available that will support Core 2 Duo chips.
Oh yeah? Well what about this one?
ASRock 775Dual-VSTA $58.99 www.newegg.com/Product/Product.asp?Item=N82E16813157092
It supports Conroe, DDR, DDRII, AGP, PCI-e....which to me is somewhat the equevelent of the ASROCK 939DUAL SATAII. For people with older systems that have DDR, or AGP, the 775Dual-VSTA is the board that can make the transition a little cheaper.
Why you guys didn't recommend this board I don't know...maybe you didnt know about it? Or worse (and I doubt this is true) it was showing AMD bias.
That's my bone to pick....
JarredWalton - Monday, July 10, 2006 - link
I will let Gary's review explore overclocking on the ASRock motherboard. I really have no idea how it will perform, and the truth is that I started working on this article several weeks ago. If I knew for sure which budget motherboards can run Core 2 Duo and overclock well, I would be happy to recommend such a motherboard. We'll probably have to wait a few more weeks to get a clear feel for that market.