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#41
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Should I go Dual Core or Quad Core? Intel C2 DUO E6850 vs. Quad-CoreQ6600
In article , Gypsy Baron wrote:
Patrick Vervoorn wrote: Out of curiosity, since you give relative values: What temperature do you see for the Q6600 as a whole? And what are each of the core's temperatures? Right now just running in 2D mode with browser I'm seeing Tcase at 38C, core 0 45C, 1= 42C, 2 = 39C and 4 = 45C Tcase is the temperature indicated by a case- or motherboard-sensor? Or is this the 'overall' temperature of the Q6600? Core temperatures look ok, but perhaps a bit high for an idle system? My room ambient is 16C and hard drives are at 33C. My 8800GTS GPU is at 56C. Sounds similar to what I have. Running Prime95 now I see Tcase = 50C, 0=58C, 1 = 48C, 2= 47C 3 = 59C. Tcase MAX for the 6600 G0 is 71C. What do you mean with Tcase MAX? The maximum temperature you ever saw, or the temperature until which a Q6600 G0 is certified to work ok? If that's indeed the 'overall' temperature of the Q6600, at 71C I expect the cores to be around 90 to 100 C? I'm running a Q6600 using the default Intel cooler, no overclocking, and it's running SetiBOINC 24/7. I get an 'overall' temperature of around 55-57C, with the cores hovering around the 65-70C mark. I might have to experiment a bit with the settings of the case-fans, since I'm using an Antec P182 case with all of the case-fans set at the lowest speed. I'm using Speedfan with the -15C temperarure adjustment applied. Measurement readouts using Everest are the same. What do you mean with "the -15C temperature adjustment"? Regards, Patrick. |
#42
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Should I go Dual Core or Quad Core? Intel C2 DUO E6850 vs. Quad-Core Q6600
Fred wrote:
Frank McCoy wrote: In alt.comp.hardware.pc-homebuilt "Fred" wrote: John Weiss wrote: "Fred" wrote... What about the new Intel Penryn range due out soon. Have you considered one of them? If you always wait to consider a computer part "due out soon," you'll never buy ANYTHING! IMHO sometimes it is a bad time to buy. February should bring a next generation of Intel cpu's and quite possibly lower prices. There's the new AMD quad-cores out right now .... True and from what I have read the reason Intel have delayed their launch of the new range is because of the hardware bug in the AMD quad-cores. It must make the AMD offering less of a threat to their market share. Erratum degrades Phenom 9500, 9600 performance http://www.techreport.com/discussions.x/13724 Anyhow the local pc shop here in Australia has just got stock of the E8500 3.16GHz 6 MB cache for $349 Australian and the E8400 3.0GHz 6 MB cache for $249 compared to existing E6750 2.66GHz 4 MB cache $220 E6850 3.0GHz 4MB cache $328 So here at least the new 3.0GHz c2d is cheaper than the old 3.0GHz cpu Picture of retail packaging here. http://www.itsky.com.au/assets/catalog/parts/e8400.jpg |
#43
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Should I go Dual Core or Quad Core? Intel C2 DUO E6850 vs. Quad-CoreQ6600
Patrick Vervoorn wrote:
In article , Gypsy Baron wrote: -SNIP- Right now just running in 2D mode with browser I'm seeing Tcase at 38C, core 0 45C, 1= 42C, 2 = 39C and 4 = 45C Tcase is the temperature indicated by a case- or motherboard-sensor? Or is this the 'overall' temperature of the Q6600? Tcase is reported by the Q6600 sensor as well as the individual core sensors. Core temperatures look ok, but perhaps a bit high for an idle system? I'm running overclocked to 3.2Ghz with the voltage at 1.4V. The individual cores are typically 7C higher than Tc but also read various values in between. My room ambient is 16C and hard drives are at 33C. My 8800GTS GPU is at 56C. Sounds similar to what I have. Running Prime95 now I see Tcase = 50C, 0=58C, 1 = 48C, 2= 47C 3 = 59C. Tcase MAX for the 6600 G0 is 71C. What do you mean with Tcase MAX? The maximum temperature you ever saw, or the temperature until which a Q6600 G0 is certified to work ok? If that's indeed the 'overall' temperature of the Q6600, at 71C I expect the cores to be around 90 to 100 C? Tc is the value Intel uses to spec the temperature limits, etc. See the following Intel document and have a look at the charts on page 75 for the Q6600 G0 ( 95W ) chip. ftp://download.intel.com/design/proc...s/31559205.pdf -SNIP- I'm using Speedfan with the -15C temperarure adjustment applied. Measurement readouts using Everest are the same. What do you mean with "the -15C temperature adjustment"? Regards, Patrick. First, that should be an offset of +15C....without it Speedfan will read the Core temps 15C lower than actual. Sorry for the error. Speedfan reports temperatures based on a particular sensor reference point, as I understand it. It has been reported on several overclocking sites that for the Q6600 ( and possibly others ) the Speedfan data is incorrect unless one applies a +15C adjustment. This can be done by going to the "Configure" tab, "Advanced", select "Intel Core" from the drop down list and enter a temperature offset of "15" for each core. I'm using Speedfan version 4.33 BTW. As I mentioned earlier, the adjusted temps corellate with Everest. Everest calls Tc "CPU" temp while Speedfan reports it as "Temp2" on my motherboard. Speedfans "Core" temp is the 8800GTS GPU temp. Paul |
#44
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Should I go Dual Core or Quad Core? Intel C2 DUO E6850 vs. Quad-CoreQ6600
In article , Gypsy Baron wrote:
Patrick Vervoorn wrote: In article , Gypsy Baron wrote: Tcase is the temperature indicated by a case- or motherboard-sensor? Or is this the 'overall' temperature of the Q6600? Tcase is reported by the Q6600 sensor as well as the individual core sensors. Aha, ok. It's what listed as the 'CPU' temp in Everest, and something like Temp3 in SpeedFan (IIRC, not in front of the system at the moment). It's also the CPU temperature as reported by nTune. What do you mean with Tcase MAX? The maximum temperature you ever saw, or the temperature until which a Q6600 G0 is certified to work ok? If that's indeed the 'overall' temperature of the Q6600, at 71C I expect the cores to be around 90 to 100 C? Tc is the value Intel uses to spec the temperature limits, etc. See the following Intel document and have a look at the charts on page 75 for the Q6600 G0 ( 95W ) chip. ftp://download.intel.com/design/proc...s/31559205.pdf Very enlightening, thanks for the link. What do you mean with "the -15C temperature adjustment"? First, that should be an offset of +15C....without it Speedfan will read the Core temps 15C lower than actual. Sorry for the error. Speedfan reports temperatures based on a particular sensor reference point, as I understand it. It has been reported on several overclocking sites that for the Q6600 ( and possibly others ) the Speedfan data is incorrect unless one applies a +15C adjustment. This can be done by going to the "Configure" tab, "Advanced", select "Intel Core" from the drop down list and enter a temperature offset of "15" for each core. I'm using Speedfan version 4.33 BTW. As I mentioned earlier, the adjusted temps corellate with Everest. Everest calls Tc "CPU" temp while Speedfan reports it as "Temp2" on my motherboard. Speedfans "Core" temp is the 8800GTS GPU temp. Yes, I compared the readouts from Everest and SpeedFan (also 4.33) and indeed SpeedFan's core-temperature were off by 15C, so I'm seeing the same. Thanks for the explanation! Regards, Patrick. |
#45
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Should I go Dual Core or Quad Core? Intel C2 DUO E6850 vs.Quad-Core Q6600
On Jan 4, 3:04*am, "Fred" wrote:
What about the new Intel Penryn range due out soon. Have you considered one of them? "Matt" wrote in message ... Hey guys. I'm looking at upgrading my PC and I've come across an interesting problem: - Pay £165 for a Intel Dual Core E6850 (clocked @ 3.0GHz) - Pay £160 for a Quad Core Q6600 (clocked @ 2.4GHz) Now to my untrained eye, the quad-core seems like an easy choice. Am I correct, or is the performance benefit from the 2 additional cores completely lost by the low bandwidth connection between the 2 dies, as mentioned in a Wikipedia article below: "A quad-core CPU (as a two-die set in particular), however, can rarely double the processing ability of each of its constituent halves (e.g. the Kentsfield rarely doubles the ability of the Conroe), due to a loss of performance resulting from connecting them (i.e. sharing the narrow memory bandwidth, and operating system overhead of handling twice as many cores and threads)." Will all applications for Windows eventually become multi-threaded and fully utilise a quad core setup? Because if so then surely the 2.4GHz quad core would outperform the 3.0GHz dual core in the future? Basically this comes down to dual core vs. quad core, and I'm hoping there's a clear consensus about which to buy! Kind Regards, Matt I went for quad because of 8Mb cash that, presumably, is shared between all the cores. |
#46
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Should I go Dual Core or Quad Core? Intel C2 DUO E6850 vs. Quad-CoreQ6600
waiting for my pc, but most of the time my pc is idle. To be honest
most applications can't even take advantage of dual core. Maybe so but I do like the fact that I can have my dual-core PC doing something heavy-duty like encoding and still have it responsive and snappy if I want to check email etc. Encoding on my old single-core was an overnight job as the PC was useless for anything else once I hit "start". I find myself in exactly the same position as the original poster. I've found the same problem with single-core video encoding, but how to decide between dual and quad core? With quad would I be able to do some dvd compression, burn a dvd, encode some wavs to mp3, and still have a responsive pc to do some text editing, web browsing, etc.? In other words would each of the processor intensive tasks get assigned a core and stick with it? What about the OS, do I need 64bit xp or vista with dual/quad processing? I've heard that if you get 4GB RAM, a 64bit OS is recommended - is that true. Thanks all. |
#47
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Should I go Dual Core or Quad Core? Intel C2 DUO E6850 vs. Quad-CoreQ6600
Matthew wrote:
waiting for my pc, but most of the time my pc is idle. To be honest most applications can't even take advantage of dual core. Maybe so but I do like the fact that I can have my dual-core PC doing something heavy-duty like encoding and still have it responsive and snappy if I want to check email etc. Encoding on my old single-core was an overnight job as the PC was useless for anything else once I hit "start". I find myself in exactly the same position as the original poster. I've found the same problem with single-core video encoding, but how to decide between dual and quad core? With quad would I be able to do some dvd compression, burn a dvd, encode some wavs to mp3, and still have a responsive pc to do some text editing, web browsing, etc.? In other words would each of the processor intensive tasks get assigned a core and stick with it? What about the OS, do I need 64bit xp or vista with dual/quad processing? I've heard that if you get 4GB RAM, a 64bit OS is recommended - is that true. Thanks all. you don't need a 64bit O/S to use either a dual core ore Quad core cpu however you are correct if you intend to use 4gb or more Ram then a 64bit O/S is recommended as it will be able to address all the memory available where as 32bit xp/vista will have some issues past 3gb depending on the motherboard and memory set-up you may see just over 3.5Gb using a 32bit O/S |
#48
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Should I go Dual Core or Quad Core? Intel C2 DUO E6850 vs. Quad-Core Q6600
On Wed, 16 Jan 2008 16:37:45 GMT, Matthew
wrote: waiting for my pc, but most of the time my pc is idle. To be honest most applications can't even take advantage of dual core. Maybe so but I do like the fact that I can have my dual-core PC doing something heavy-duty like encoding and still have it responsive and snappy if I want to check email etc. Encoding on my old single-core was an overnight job as the PC was useless for anything else once I hit "start". I find myself in exactly the same position as the original poster. I've found the same problem with single-core video encoding, but how to decide between dual and quad core? You don't need either, just go into Task Manager, right-click on the list item using the processor time, and set it's priority to "low". It's largely a myth that anything that isn't realtime needs more than one processor (core). In some cases the application doing the encoding even lets you set it's process priority ahead of time so it's always what you want... and IMO most people will want "low", even if they had a dual core or quad system. With quad would I be able to do some dvd compression, burn a dvd, encode some wavs to mp3, and still have a responsive pc to do some text editing, web browsing, etc.? In other words would each of the processor intensive tasks get assigned a core and stick with it? The answer is that you will have more processes running than cores even with a quad core. Seldom do people want to consider this truth. Adding more cores does give the system more processing power in general when more than one process is linearlly bound instead of just idling away most of the time. Yes once a process is assigned to a core it will continue using it. What remains is as mentioned above, that with more than 4 processes whether your system remains responsive for what you are doing in the foreground depends on that task running at higher priority than what is running in the background. Merely putting the app in focus by using it does elevate the priority but not necessarily enough in some cases. I'm not trying to talk you out of a faster new dual or quad core system, I'm just saying for years I had no problem using a single core to do video encoding or the other things you list in the background while the system was fully responsive for text editing or web, email, etc in the foreground. With a good dual or quad core what you get is the background linear processor consumer jobs get done a lot faster. What about the OS, do I need 64bit xp or vista with dual/quad processing? I've heard that if you get 4GB RAM, a 64bit OS is recommended - is that true. Your applications and drivers are the other factor to consider, 64bit OS is not needed for dual or quad core processors. |
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