Mobile penryn core2duo DC performance

[biodoc]

I recently put a dent in my bank account and bought a macbook with a 2.4 GHz penryn Core 2 duo. It only has 3 MB level 2 cache vs 6 MB in the desktop penryn core 2 duos. Anyway, I decided to see how it compares to my 2.4 GHz Q6600 on a per core basis on the boinc poem@home project. Both computers have the same RAM speed (667MHz). The macbook is running macos leopard and the Q6600 is running Windows Vista Home. I also gave it a quick test on FAH SMP.

Boinc cpu benchmarks: (I know this is not terribly predictive)

macbook:

GenuineIntel
Intel(R) Core(TM)2 Duo CPU T8300 @ 2.40GHz [x86 Family 6 Model 23 Stepping 6]

Measured floating point speed 2689.34 million ops/sec
Measured integer speed 6272.78 million ops/sec

Q6600@2.4GHz:

GenuineIntel
Intel(R) Core(TM)2 Quad CPU @ 2.40GHz [x86 Family 6 Model 15 Stepping 7]

Measured floating point speed 2329.11 million ops/sec
Measured integer speed 5130.88 million ops/sec

Poem@home WUs:

macbook:

cpu time (sec)__claimed credit___granted credit
1,116.12_________5.79___________9.45
1,071.84_________5.56___________9.45
1,141.00_________5.92___________9.45

Q6600:

cpu time (sec)__claimed credit___granted credit
1,383.28_________5.97___________9.45
1,370.30_________5.92___________9.45
1,310.89_________5.66___________9.45

The caveat here is the 2 different OSes but the mobile penryn does seem to do quite well.

I also tested it on FAH SMP:

2605 WU (1760 points): 17 min step time --> 1490 ppd

The mobile penryn has a smaller L2 cache (3 MB vs 4MB). I guess I'm a bit disappointed in the 1490 ppd but not sure since I've never folded on a core2duo.

the Q6600 does 2200 ppd on 1xSMP and 2800 ppd on 2xsmp with affinity changer.

Cheers!:beer:

 

[Insidious]

Cool comparison Doc... Thanks!

Nothin, but desktops here.... Who needs a laptop to move from room to room..... just put a Desktop in every room! :roll:

(Watch your temps DCing on that lappy)

:beer:

 

[mrwizer]

My C2D Laptop crunches too. Yet I have found that a cooler pad that runs off of USB helps a lot. If not for the pad, I wouldn't run DC on it as I do not want any heat related wear and tear.

And nice comparison biodoc. My lappy performs very well also, yet I cannot offer direct comparisons as I do not have a similar clocked desktop with same CPU.

 

[biodoc]

Thanks for the useful feedback guys! I think I'll pull it off DC for now because it does generate a lot of heat. I need to find a coretemp utility that works for OSX too.

cheers!:beer:

 

[biodoc]

I found a temp utility for OSX.

idle: 44C
full load (poem@home): ramps up to 79C then fan starts ramping up and brings temp down to 73C.

No DC on this baby!😉

 

[Insidious]

Originally posted by: biodoc
I found a temp utility for OSX.

idle: 44C
full load (poem@home): ramps up to 79C then fan starts ramping up and brings temp down to 73C.

No DC on this baby!😉

I think you made a good decision. You know I love to crunch, but that's mighty HOT

:beer:

 

[bryanW1995]

Originally posted by: mrwizer
My C2D Laptop crunches too. Yet I have found that a cooler pad that runs off of USB helps a lot. If not for the pad, I wouldn't run DC on it as I do not want any heat related wear and tear.

And nice comparison biodoc. My lappy performs very well also, yet I cannot offer direct comparisons as I do not have a similar clocked desktop with same CPU.

where can we purchase one of these cooler pads? that sounds pretty, um, cool 🙂

 

[mrwizer]

Originally posted by: bryanW1995

Originally posted by: mrwizer
My C2D Laptop crunches too. Yet I have found that a cooler pad that runs off of USB helps a lot. If not for the pad, I wouldn't run DC on it as I do not want any heat related wear and tear.

And nice comparison biodoc. My lappy performs very well also, yet I cannot offer direct comparisons as I do not have a similar clocked desktop with same CPU.

where can we purchase one of these cooler pads? that sounds pretty, um, cool 🙂

I have something similar to this, yet not sure if mine is made anymore. I figure for a small price it will keep the lappy cooler. Plus it makes using it on your lap a lot more comfortable! I haven't done any good temperature comparisons of the core during load with and without the cooler, but I can tell you that the entire laptop feels cooler when its used, top and bottom. 🙂