13 inch MacBook Pro (MBP) RAM Bench Test Results for: 4GB, 6GB, & 8GB DDRAM
Background/Introduction
I was bored and so I decided to test some RAM out. I am curious as to the difference in 4, 6, and 8GB. I also want to see how 4GB of Crucial RAM (1 stick) compares to the factory Apple RAM (2-sticks). Lets take a closer look at this.
Here are the specs for my computer:
13 inch MacBook Pro, late 2009 Unibody, model 5,5
2.53 Core 2 Duo CPU, NVIDIA GeForce 9400 GPU, 4GB RAM (from the factory, two 2GB sticks), RAM type: DDR3 at 1067Mhz
120/8 GB OWC Mercury Extreme Pro Solid State Drive: about 80GB used and 40GB free
No other hardware modifications other than the SSD and RAM
Methodology: Testing Procedure
Reconnect the computer to an electrical outlet and restart the computer
First test with Geekbench
Quit Geekbench
Test with XBench
Shut the computer down and disconnect the power cord
Change out the memory to a different amount
Start from the top again in the exact same format
Results:
4GB Apple Based RAM (two 2GB Sticks, both slots used with equal RAM)
Total XBench score: 207.78
Memory Test: 192.47
System 240.19
Allocate 428.89 1.58 Malloc/sec
Fill 183.90 8941.80 MB/sec
Copy 211.83 4375.22 MB/sec
Stream 160.56
Copy 152.72 3154.28 MB/sec
Scale 151.60 3132.05 MB/sec
Add 170.43 3630.58 MB/sec
Triad 169.47 3625.42 MB/sec
Total Geekbench score: 3564
Memory Performance: 2628
Memory Bandwith Performance: 1831
4GB Crucial RAM (one 4GB stick in slot 0, other slot left empty)
Total XBench Score: 198.40
Memory Test 165.87
System 231.25
Allocate 428.23 1.57 Malloc/sec
Fill 177.21 8616.30 MB/sec
Copy 200.21 4135.36 MB/sec
Stream 129.31
Copy 124.56 2572.80 MB/sec
Scale 125.81 2599.10 MB/sec
Add 134.48 2864.64 MB/sec
Triad 132.99 2844.96 MB/sec
Total Geekbench score: 3509
Memory Performance: 2544
Memory Bandwith Performance: 1438
6GB RAM (One 4GB Crucial stick and one 2GB Apple-based stick)
Total XBench score: 208.18
Memory Test 191.06
System 237.57
Allocate 434.44 1.60 Malloc/sec
Fill 183.84 8938.68 MB/sec
Copy 204.65 4227.02 MB/sec
Stream 159.77
Copy 152.72 3154.28 MB/sec
Scale 149.94 3097.78 MB/sec
Add 169.63 3613.38 MB/sec
Triad 168.83 3611.76 MB/sec
Total Geekbench score: 3563
Memory Performance: 2629
Memory Bandwith Performance: 1822
8GB RAM (two 4GB Crucial sticks in each slot)
Total XBench score: 210.52
Memory Test 190.52
System 238.56
Allocate 425.19 1.56 Malloc/sec
Fill 183.42 8918.48 MB/sec
Copy 209.58 4328.77 MB/sec
Stream 158.58
Copy 151.13 3121.63 MB/sec
Scale 148.45 3066.92 MB/sec
Add 169.00 3600.07 MB/sec
Triad 167.97 3593.32 MB/sec
Total Geekbench score: 3561
Memory Performance: 2628
Memory Bandwith Performance: 1827
Other Major Differences with XBench
My disk test speed was significantly slower with the one 4GB Crucial stick than the original 4GB, 6GB or 8GB (10-16 point difference on overall disk score)
Other Major Differences with Geekbench
None of significant value
Study Limitations
How much these figures mean is debatable
If these figures correspond to real world performance may not be very likely
Obviously, the 8GB set-up will have higher performance as more physical memory is used; I did these tests from a cold-startup with no other programs running
I have the older and slower, Core 2 Duo processor; the iX series may be affected differently
I initially conducted each test 3 times, but after getting consistent results, I stopped as it was too confusing to quantify
This is one test for only one computer; it may affect you completely differently
Discussion (these conclusions are drawn from the results and so they may or may not affect real world usage)
RAM upgrades do not make a computer faster as is commonly implied, but RAM can, however, make a computer much faster if you are using most of your available (free) memory
Rating wise, using a single 4GB Crucial memory stick showed inferior performance to the two 2GB memory sticks included from the factory and it also affected my SSDs read/write speed negatively. Subsequently the possibility exists that two 2GB sticks may be a better choice than one 4GB stick for users going from 2GB to 4GB
6GB works fine on this model MBP and may be a good upgrade for people unable to afford the 8GB. Although Apple recommends using matching size pairs, this did not seem to affect performance whatsoever
Two different brand-name RAM sticks can be used simultaneously
8GB makes no major impact on performance when you are not using significant physical memory
RAM speed, type, and size allocation have the ability to impact the benchmarked speeds of other computer parts, both negatively and positively
2GB of RAM was not tested and probably should be in the future for a baseline comparison
Future studies need to test RAM with a higher speed (1333Mhz) to the standard 1067Mhz used by the MBP to see if there is any performance advantage or disadvantage
Overall, for users considering going from 4GB to 8GB in their MBP, if they currently are not using most to almost all of their physical memory, this may not be a worthwhile upgrade at the present time. With that said, 8GB of RAM can currently be purchased for under $100 making it one of the least expensive upgrades for the MacBook Pro.
Background/Introduction
I was bored and so I decided to test some RAM out. I am curious as to the difference in 4, 6, and 8GB. I also want to see how 4GB of Crucial RAM (1 stick) compares to the factory Apple RAM (2-sticks). Lets take a closer look at this.
Here are the specs for my computer:
13 inch MacBook Pro, late 2009 Unibody, model 5,5
2.53 Core 2 Duo CPU, NVIDIA GeForce 9400 GPU, 4GB RAM (from the factory, two 2GB sticks), RAM type: DDR3 at 1067Mhz
120/8 GB OWC Mercury Extreme Pro Solid State Drive: about 80GB used and 40GB free
No other hardware modifications other than the SSD and RAM
Methodology: Testing Procedure
Reconnect the computer to an electrical outlet and restart the computer
First test with Geekbench
Quit Geekbench
Test with XBench
Shut the computer down and disconnect the power cord
Change out the memory to a different amount
Start from the top again in the exact same format
Results:
4GB Apple Based RAM (two 2GB Sticks, both slots used with equal RAM)
Total XBench score: 207.78
Memory Test: 192.47
System 240.19
Allocate 428.89 1.58 Malloc/sec
Fill 183.90 8941.80 MB/sec
Copy 211.83 4375.22 MB/sec
Stream 160.56
Copy 152.72 3154.28 MB/sec
Scale 151.60 3132.05 MB/sec
Add 170.43 3630.58 MB/sec
Triad 169.47 3625.42 MB/sec
Total Geekbench score: 3564
Memory Performance: 2628
Memory Bandwith Performance: 1831
4GB Crucial RAM (one 4GB stick in slot 0, other slot left empty)
Total XBench Score: 198.40
Memory Test 165.87
System 231.25
Allocate 428.23 1.57 Malloc/sec
Fill 177.21 8616.30 MB/sec
Copy 200.21 4135.36 MB/sec
Stream 129.31
Copy 124.56 2572.80 MB/sec
Scale 125.81 2599.10 MB/sec
Add 134.48 2864.64 MB/sec
Triad 132.99 2844.96 MB/sec
Total Geekbench score: 3509
Memory Performance: 2544
Memory Bandwith Performance: 1438
6GB RAM (One 4GB Crucial stick and one 2GB Apple-based stick)
Total XBench score: 208.18
Memory Test 191.06
System 237.57
Allocate 434.44 1.60 Malloc/sec
Fill 183.84 8938.68 MB/sec
Copy 204.65 4227.02 MB/sec
Stream 159.77
Copy 152.72 3154.28 MB/sec
Scale 149.94 3097.78 MB/sec
Add 169.63 3613.38 MB/sec
Triad 168.83 3611.76 MB/sec
Total Geekbench score: 3563
Memory Performance: 2629
Memory Bandwith Performance: 1822
8GB RAM (two 4GB Crucial sticks in each slot)
Total XBench score: 210.52
Memory Test 190.52
System 238.56
Allocate 425.19 1.56 Malloc/sec
Fill 183.42 8918.48 MB/sec
Copy 209.58 4328.77 MB/sec
Stream 158.58
Copy 151.13 3121.63 MB/sec
Scale 148.45 3066.92 MB/sec
Add 169.00 3600.07 MB/sec
Triad 167.97 3593.32 MB/sec
Total Geekbench score: 3561
Memory Performance: 2628
Memory Bandwith Performance: 1827
Other Major Differences with XBench
My disk test speed was significantly slower with the one 4GB Crucial stick than the original 4GB, 6GB or 8GB (10-16 point difference on overall disk score)
Other Major Differences with Geekbench
None of significant value
Study Limitations
How much these figures mean is debatable
If these figures correspond to real world performance may not be very likely
Obviously, the 8GB set-up will have higher performance as more physical memory is used; I did these tests from a cold-startup with no other programs running
I have the older and slower, Core 2 Duo processor; the iX series may be affected differently
I initially conducted each test 3 times, but after getting consistent results, I stopped as it was too confusing to quantify
This is one test for only one computer; it may affect you completely differently
Discussion (these conclusions are drawn from the results and so they may or may not affect real world usage)
RAM upgrades do not make a computer faster as is commonly implied, but RAM can, however, make a computer much faster if you are using most of your available (free) memory
Rating wise, using a single 4GB Crucial memory stick showed inferior performance to the two 2GB memory sticks included from the factory and it also affected my SSDs read/write speed negatively. Subsequently the possibility exists that two 2GB sticks may be a better choice than one 4GB stick for users going from 2GB to 4GB
6GB works fine on this model MBP and may be a good upgrade for people unable to afford the 8GB. Although Apple recommends using matching size pairs, this did not seem to affect performance whatsoever
Two different brand-name RAM sticks can be used simultaneously
8GB makes no major impact on performance when you are not using significant physical memory
RAM speed, type, and size allocation have the ability to impact the benchmarked speeds of other computer parts, both negatively and positively
2GB of RAM was not tested and probably should be in the future for a baseline comparison
Future studies need to test RAM with a higher speed (1333Mhz) to the standard 1067Mhz used by the MBP to see if there is any performance advantage or disadvantage
Overall, for users considering going from 4GB to 8GB in their MBP, if they currently are not using most to almost all of their physical memory, this may not be a worthwhile upgrade at the present time. With that said, 8GB of RAM can currently be purchased for under $100 making it one of the least expensive upgrades for the MacBook Pro.