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Sasha55

macrumors newbie
Original poster
Apr 24, 2011
8
0
I recently upgrade MBP 2011 17” 2,2GHz to 8Gb(2x4gb) of Crucial DDR3 1333 PC10600 CT51264BC1339, and was not satisfied with memory speed with xbench, allocate is only 1,6 Malloc/sec compare to 3,4 Malloc/sec with original Apple memory from Samsung. Do you have any idea? What is the best memory for MBP 2011 2.2Ghz? It would be grate if someone can add xbench results as screenshot.
 

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people have had good results with G.skill 1333mhz or crucial 1333mhz. kingston hyperX 1600mhz is also usable for us and might be better, but must be the none GX version (eg: no XMP)
 
Here are results of Crucial 1333MHz, on my 2.3:

Results 593.70
System Info
Xbench Version 1.3
System Version 10.6.7 (10J3250)
Physical RAM 8192 MB
Model MacBookPro8,2
Drive Type C300-CTFDDAC128MAG
Memory Test 593.70
System 625.44
Allocate 987.44 3.63 Malloc/sec
Fill 425.85 20705.87 MB/sec
Copy 696.53 14386.49 MB/sec
Stream 565.04
Copy 546.66 11291.14 MB/sec
Scale 545.57 11271.22 MB/sec
Add 588.96 12546.06 MB/sec
Triad 581.72 12444.47 MB/sec
 
X2. It's useless as you are trying to measure the speeds of technologies that did not exist when XBench was last updated.

what tool can be used to measure a real speed ?

@Wanderer509
wat you mean no XMP (GX version) ?
is this the right one ?

KHX1600C9S3K2/8G
 
I gona order KHX1600C9S3K2/8G and hope it come till the end of this week, then i can do some more testing with 3 RAM (Samsung, crucial and kingston 1600)
for now there are some additional screenshots with crucial ram. What also would be very interesting is to test ram on real application.
 

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what tool can be used to measure a real speed ?

Unfortunately, I am yet to see any benchmark test that reflects real time use. Obviously, they can serve as a baseline, but it really doesn't mean much. My older MacBook Pro 13 with the 2009-era Core 2 Duo CPU ran slow speeds on bench tests, but would execute similar processes far faster than newer i5 PCs that would benchmark far higher scores (and the programs were compared were the same although I realize OSX v. 7 isn't a perfect comparison).

I got 8GB of RAM on my 2009 MBP, which was overkill at the time. I did not run huge stat programs on the laptop then, and I rarely used over 4 GBs of RAM. I guess 8GB is still a substantial amount of RAM relative to common programs...now I need 16 due to some huge files, but most people don't work these massive stat files and there is a reason for that...it's called hair loss. :p
 
Well it does exist because I'm using it too!

The 8GX parts won't run at 1600MHz in your MBP.

It exists, and i'm just happy with my mac
for unbeliever, the screenshot is from 29.04.2011 since that no problems:
 

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