Intel Core i5-661: A 32nm CPU with Integrated Graphics
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Another awesome review.
Does anyone know if Intel intends to release an Xeon version of this chip? I.e., one that supports ECC memory? Looks like another potential fileserver/NAS platform.
It also looks like a potential HTPC platform. Sure, not as good as e.g. NVidia 9300 or AMD 785G, but good enough. In particular, I'm thinking about MythTV. NVidia is generally regarded as the current champ for MythTV, due to their Linux support. More recent chipsets also support VDPAU, which is supported in the development version of MythTV (and also a fork of the current version). But a number of people are still anti-NVidia given that their drivers are closed source. I would assume the drivers for this Intel integrated GPU will be open source.
Does anyone know if Intel intends to release an Xeon version of this chip? I.e., one that supports ECC memory? Looks like another potential fileserver/NAS platform.
It also looks like a potential HTPC platform. Sure, not as good as e.g. NVidia 9300 or AMD 785G, but good enough. In particular, I'm thinking about MythTV. NVidia is generally regarded as the current champ for MythTV, due to their Linux support. More recent chipsets also support VDPAU, which is supported in the development version of MythTV (and also a fork of the current version). But a number of people are still anti-NVidia given that their drivers are closed source. I would assume the drivers for this Intel integrated GPU will be open source.
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This might answer the Folding@Home question:NeilBlanchard wrote:Hi,
An interesting CPU -- I wonder if the graphics will support the GPU Folding@Home client? I am also curious -- the PS/2 port has split colors green and purple? I would guess that you can plug a keyboard OR a mouse into it?
http://techreport.com/articles.x/18216/14
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One thing I'm always thinking about is our office PCs. We don't need a whole lot of CPU power. (but it doesn't hurt) And we run dual monitors (at least). The i3 especially sounds like an awesome low-powered office PC. It sounds like it supports two displays at the same time. Can you verify that you could use the DVI and HDMI for dual digital displays? Also, can the IGP be used in parallel with a PCIe graphics card for additional displays?
As the article briefly mention, I am a bit sceptical to the usefullness of this CPU compared to the i750 for the average user. The turbo-mode makes the i750 pretty snappy in workloads that are not very multithreaded, so you get the best of both words in a way. If you need the IGP the i661 looks a bit better however. I waited for theese CPUs for my HTPC-build, i think I will get a i750 (or maybe a i3)
AtW
AtW
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With any luck, the price of the i5-750 will go down a little bit once these new processors find their way to retail. I think pairing the 750 with it's true 4 cores and 20% turbo-boost with one of the upcoming lower-end HD 5xxx cards will still be an attractive option for many mid-range system builders.
Has there been any word on when we'll see 4-core 32nm CPUs from Intel?
Has there been any word on when we'll see 4-core 32nm CPUs from Intel?
power consumption
Nice power consumption, know someone how it will react with external gtx260 in pcie? If it can be turned off while only surfing and then switched on while 3d gamming?
I'm looking for these features, because i want more power saving system.
Now my C2D based system with gtx260 takes 100W (250W on load)
- i'm crazy from this idle consumption
I'm looking for these features, because i want more power saving system.
Now my C2D based system with gtx260 takes 100W (250W on load)
- i'm crazy from this idle consumption
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nice review. Yours shows much lower power consumption that on some of the other sites. Thank you for focusing on that aspect of the system.
Can't wait to see more tests as they come out on the i3 and H series MB's with on die CPU + GPU, with True-HD and DTS-MA bitstreaming built in. that with even lower yet consumption would be sweet.
Can't wait to see more tests as they come out on the i3 and H series MB's with on die CPU + GPU, with True-HD and DTS-MA bitstreaming built in. that with even lower yet consumption would be sweet.
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Most sites used the Asus P7H57DV-EVO which consumes a lot more power than the Intel H55 board that SPCR used – TechReport.wickchucker wrote:nice review. Yours shows much lower power consumption that on some of the other sites. Thank you for focusing on that aspect of the system.
It’ll be interesting to see what a decent low power H5x board can achieve when over-clocking or under-volting.
*page 5Article wrote:To get an idea of how much power the CPU actually requires, we measured the current flowing directly ATX12V connector as well as the voltage with the system in various load states.
Technically not a complete sentence.
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In that quote above, did you use a wrap-around current meter? (for lack of a better name)
Doesn't this platform seem great for a higher end HTPC? I wouldn't know first hand cause I've never gotten to research and build one. Maybe it's overkill though...
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Changed to:RoGuE wrote:*page 5Article wrote:To get an idea of how much power the CPU actually requires, we measured the current flowing directly ATX12V connector as well as the voltage with the system in various load states.
Technically not a complete sentence.
%%%%%%%%%%%%%%%%%%
In that quote above, did you use a wrap-around current meter? (for lack of a better name)
A high precision multimeter was used.To get an idea of how much power the CPU actually requires, we measured the current (through a 0.01 ohm shunt resistor) and voltage at the ATX12V connector in various CPU load states. This allows us to calculate the power demanded by the CPU and the board's VRM (DC-DC converter).
Yup, it's an obvious application. Much lower performance plaforms work fine, but browsing through large libraries of media files can be tedious with a slow PC.Doesn't this platform seem great for a higher end HTPC? I wouldn't know first hand cause I've never gotten to research and build one. Maybe it's overkill though...
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For just playing back content the i5-661 is more than is needed. However, most folks with HTPCs rip DVDs, BluRay disks, transcode files and for that the CPU not over kill at all.
Regarding a question above; the HDMI supports audio with a protected audio path the same way that the 5XXX series ATI cards do.
Regarding a question above; the HDMI supports audio with a protected audio path the same way that the 5XXX series ATI cards do.
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I doubt most people do that. Ripping, maybe... but that isn't CPU intensive.b_rubenstein wrote:However, most folks with HTPCs rip DVDs, BluRay disks, transcode files and for that the CPU not over kill at all.
The mobile version of this CPU can throttle back the graphics to save power even more. Damn you Intel for disabling it for the desktop.
I am wondering how the core i3 will compare to AMD's Athlon II 235e and 240e. They are 45w chips. Not as fast as i3 I'm sure, but fast enough. Even for gaming they will be very competent. I expect the AMD setup will be a good chunk of money cheaper. Once you add up the extra for CPU, motherboard, upgradability, and probably a new cooler (damn you Intel, what's wrong with LGA 775 mounting holes???). But I'm interested to know which will have lower power consumption.
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A post I made elsewhere recently:DAve_M wrote:I am wondering how the core i3 will compare to AMD's Athlon II 235e and 240e. They are 45w chips. Not as fast as i3 I'm sure, but fast enough. Even for gaming they will be very competent. I expect the AMD setup will be a good chunk of money cheaper. Once you add up the extra for CPU, motherboard, upgradability, and probably a new cooler (damn you Intel, what's wrong with LGA 775 mounting holes???). But I'm interested to know which will have lower power consumption.
Components:-
- AMD AthlonII X2 240e (dualcore 2.8 ghz, 2mb cache - 45W TDP)
- MSI 785GN-E65 motherboard
- 4gb DDR3-1333 (2 sticks)
- Seagate 500gb Momentus 5400rpm
- Samsung DVD/CD writer
- Zalman 7000cu heatsink/fan set to <5V
- Antec NSK1480 w/ its own PSU (80+ but not very efficient at these low power levels), modded w/ quieter fan.
AC power:-
- 35-36W idle w/ screen off (I don't use a screensaver)
- 40-41W idle w/ screen on
- 50-55W playing 1080p video
- 55-60W extreme multitasking - playing 1080p video, running utorrent, winrar & Avira antivirus, streaming music via ethernet -- and amazingly, the video remains perfectly viewable >99% of the time.
EDIT: Keep in mind when comparing that my system power figures are AC while the i5-661 numbers in Larry's article are DC. You'd have to adjust the above numbers down by ~30% or more to compensate for the losses in the PSU. When that is done, my 240e system and the test i5-661 system are very close in power..
Last edited by MikeC on Sun Aug 08, 2010 4:57 pm, edited 5 times in total.
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Have you actually ever ripped a DVD to mp4?DAve_M wrote: I doubt most people do that. Ripping, maybe... but that isn't CPU intensive.
Using Handbrake (which is multi threaded) I ripped a typical full length movie to the HD and all 4 cores of the Q9550, running at 3.2 Ghz, were pegged at 100% for an hour.
From what I've seen lots of people do do it. This way they can store movies in a central repository so they can be watched on any computer on the network.
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Depends on what you mean by "rip". Personally, I consider "rip" to mean simply the process of copying the data from the CD/DVD/BD to the computer. This process is almost an entirely I/O-bound (i.e. requires virtually no CPU).b_rubenstein wrote:Have you actually ever ripped a DVD to mp4?DAve_M wrote: I doubt most people do that. Ripping, maybe... but that isn't CPU intensive.
Using Handbrake (which is multi threaded) I ripped a typical full length movie to the HD and all 4 cores of the Q9550, running at 3.2 Ghz, were pegged at 100% for an hour.
Encoding and other format conversions, on the other hand, are very CPU intensive.
The handbrake case mentioned above is "ripping" that includes both processes (data copy plus encoding). The original poster may have been suggesting "ripping" with only the data copy portion.
Mike, those numbers don't look too shabby. If AMD could get their own power gating tech like Intel uses to near turn off the idle CPU cores, then that would make a mighty fine CPU.
Yep I have. But I would call that transcoding. When I say rip I to mean a lossless pulling of data off the disk. Makes it possible to play without skipping and without DVD drive spinning up. Once you're done watching it I guess it should be deleted otherwise it will take up too much space.b_rubenstein wrote:Have you actually ever ripped a DVD to mp4?
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I think AMD is already totally competitive with Intel -- or superior -- for idle power. I checked the power at the 12Vx2 socket for this 240e some weeks ago and measured idle power at ~5W (iirc). This result is mirrored by Lost Circuits, who measured 4.4W with more accurate tools and estimated actual CPU power to be 3~3.5W. On the next page (of that LC article), the 240e was measured at just 26.8W under load.DAve_M wrote:Mike, those numbers don't look too shabby. If AMD could get their own power gating tech like Intel uses to near turn off the idle CPU cores, then that would make a mighty fine CPU.
As for transcoding of movies, I just can't see that many people doing it. I may be a minority, but once I've seen a movie, I have virtually no interest in seeing it again (at least until I've completely forgotten the story -- say 30 years or longer) and certainly would not waste 2 hours of computing power to save it to the HDD, esp. If I already have the bluray disc.
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The new version of handbrake seems to have improved on the performance. I can generally transcode a full movie on my AII 245 at 50-60fps which is only a little over an hour a piece. A 3.2GHz quad should be able to do that in a half hour.b_rubenstein wrote:Have you actually ever ripped a DVD to mp4?
Using Handbrake (which is multi threaded) I ripped a typical full length movie to the HD and all 4 cores of the Q9550, running at 3.2 Ghz, were pegged at 100% for an hour.
I do exactly this. But I use my desktop to do it, not my HTPC. My HTPC's only job is playing the media.b_rubenstein wrote:From what I've seen lots of people do do it. This way they can store movies in a central repository so they can be watched on any computer on the network.
I didn't know they were already that good. I thought system power consumption would be a bit lower in that case. Like <20W if the computer isn't doing anything. After all, laptops can get under 10W with the screen on! I wonder if it is the 450W+ ATX power supply to blame? You seem to have to go out of your way to get a lower spec PSU than that these days.MikeC wrote:I think AMD is already totally competitive with Intel -- or superior -- for idle power. I checked the power at the 12Vx2 socket for this 240e some weeks ago and measured idle power at ~5W (iirc). This result is mirrored by Lost Circuits, who measured 4.4W with more accurate tools and estimated actual CPU power to be 3~3.5W. On the next page (of that LC article), the 240e was measured at just 26.8W under load.
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Keep in mind when comparing that my system power figures are AC while the i5-661 numbers in Larry's article are DC. You'd have to adjust the above numbers down by ~30% or more to compensate for the losses in the PSU. When that is done, my 240e system and the test i5-661 system are very close in power.DAve_M wrote:I didn't know they were already that good. I thought system power consumption would be a bit lower in that case. Like <20W if the computer isn't doing anything. After all, laptops can get under 10W with the screen on! I wonder if it is the 450W+ ATX power supply to blame? You seem to have to go out of your way to get a lower spec PSU than that these days.
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For the life of me, I don't understand this obsession with CPU idle power consumption. It's somewhere on the order of only 15% of the power draw of the system at idle (with a low power system). Furthermore, your getting all hot and bothered about 2 - 3w; that's like $0.25 worth of electricity in a year.