Dual xeon 2643 vs i5-2400

[hep_hey]

Hello. I have a dual Xeon 2643 @ 3.3 GHz and a core i5-2400 @ 3.1 GHz. I get the following scores for the two in Memory Mark and CPU Mark.

Can anyone explain why the i5-2400 is just as good as the 2643 in Memory Mark ? The i5-2400 is using 4x4 GB Kingston DDR3-10600 and the Xeon 2643 is using 4x8 GB Hynix DDR3-12800.

2643
Memory Mark: 2174
Databse Operations: 65.2
Read Cached: 24874
Read Uncached: 10876
Write: 8452
Latency: 36.1
Threaded: 24057

i5-2400
Memory Mark: 2240
Databse Operations: 76.9
Read Cached: 23899
Read Uncached: 12159
Write: 8482
Latency: 26.2
Threaded: 17825

2643
CPU Mark: 14093
Integer Math: 29677
Floating Point Math: 13772
Prime Numbers: 44.0
Extended Instructions: 83.7
Compression: 22582
Encryption: 3163
Physics: 768
Sorting: 13674
Single Threaded 1869

i5-2400
CPU Mark: 6244
Integer Math: 8308
Floating Point Math: 6593
Prime Numbers: 24.5
Extended Instructions: 22.5
Compression: 7784
Encryption: 1036
Physics: 391.4
Sorting: 4865
Single Threaded 1805

[David (PassMark)]

The results are only 3% different. So it isn't dramatic. Very small percentage differences tend to be harder to explain.

Maybe the Xeon is using ECC RAM?

Did you check the timings in BIOS?

Are they both running dual channel?