Technical question about the Core 2 Duo and Mac OS X

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ed

Re: Technical question about the Core 2 Duo and Mac OS X

Post by ed » Tue Jul 31, 2007 5:57 pm

hgm wrote:But I don't overclock either.
One of the advantages of the E6600/Q6600 is its amazing overclocking possibilties with hardly risks, that is, according this source: http://www.neoseeker.com/Articles/Hardw ... 00/12.html
hgm wrote:I bought it at Mycom (www.mycom.nl) for €749, but it seems no longer in their catalogue. They now have a machine with Q6600 in stead for €799, which I suspect is the same machine with an upgraded CPU
It appears that way, yes.

Ed

jwes
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Re: Technical question about the Core 2 Duo and Mac OS X

Post by jwes » Tue Jul 31, 2007 8:07 pm

ed wrote:Where can I find the instruction set *with* cycle timing? It would be fun to make use of the extra registers of nowadays 64 bit processors.
Ed
Look on the Intel and AMD web sites for their optiimization manuals.

Dan Andersson
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Re: Technical question about the Core 2 Duo and Mac OS X

Post by Dan Andersson » Tue Jul 31, 2007 9:04 pm

OC is nice :) But when friends get too carried away about the subject and deny any backside to the practice I ask permission to run some LINPACK benchmarks ;) The machine usually cries uncle inside half an hour. Even the exotically cooled machines buckle fast.

MvH Dan Andersson

Nid Hogge

Re: Technical question about the Core 2 Duo and Mac OS X

Post by Nid Hogge » Tue Jul 31, 2007 9:22 pm

I am planning to buy this one after reading the many encomiastic reviews, I have some questions though.

1) Does the standard cooler suffice or do you recommend another one?

2) If I make the choice for the Q6600 (quad) can you run 4 separate programs in each core?
Well Im not a programmer, But here goes anyway!

1. Should be OK for usual work unless you OC. OC is really fun with this chips. Its much easier than before to reach new clock speeds.

Thermalright Ultra 120 Extreme is the best cooler for now if you plan to OC. If not and you just want to reach stable Temp I suggest Arctic-Cooling Freezer 7 Pro. Cheap and does a good job.

2. Yes, Shoudln't be a problem. Only bottleneck could be the memory amount.
They now have a machine with Q6600 in stead for €799, which I suspect is the same machine with an upgraded CPU
Is that for the whole system or just the CPU!? The CPU alone should be well below 300$.

http://www.tigerdirect.com/applications ... CatId=2758

289$. Ofcourse it only counts if you assign the machine yourself.

Hope this helps,

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Re: Technical question about the Core 2 Duo and Mac OS X

Post by mclane » Wed Aug 01, 2007 8:05 am

my intel 6300 runs perfectly with about 40 degree celsius at room temperature 20-27 (default fan).

with higher room temperature (peak was 38 degree in very hot sunlight) the cpu temperature can increase from 40 to 51 but the computer runs smoothly.

the machines runs arround the clock. it wastes not much energy.
and i can run 2 different ARENA matches or tournaments one 1 machine.

why should i overclock the machine and make it hotter or crash when everything works perfectly as it should ?!

Gerd Isenberg
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Re: Technical question about the Core 2 Duo and Mac OS X

Post by Gerd Isenberg » Wed Aug 01, 2007 8:36 am

ed wrote: Where can I find the instruction set *with* cycle timing?
For all recent x86 processors:
http://www.agner.org/optimize/instruction_tables.pdf
http://swox.com/doc/x86-timing.pdf

Software Optimization Guide for AMD Family 10h Processors:
http://www.amd.com/us-en/assets/content ... /40546.pdf

for Latencies and Throughput see Appendix C
An instruction flow through the processor is illustrated on a clock-cycle basis in Chapter 9 Page 160/161:
Multiplying four complex single-precision numbers only takes 17 cycles as opposed to 15 cycles to multiply two complex single-precision numbers.

Gerd

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