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2133 memory on Sandy Bridge tests

post #1 of 8
Thread Starter 
Hi Guys, my first post here, but wanted to share with you some results...

I'm using Corsair Vengeance 1866 9-10-9-27, but had G.Skill RipjawsZ 2133 9-11-10-28. I know that Corsair is impossible to overclock, but wanted to test how "better" memory works on Sandy Bridge platform.

First I spent 1h after switch to G.Skill to launch it on my AsRock Z77 OC Formula, all the time I had x98 - USB initialization POST code error. I was bumping up the voltages, but my processor i7-2600K was only able to run up to 4.5GHz. After an hour of fighting I realized that PLL Overvoltage which was OFF on Corsair was responsible for that reason. Switched it to ON on G.Skill made the system to boot up on 4.7GHz

Now tests (look at the pathetic 2133Mhz speed). Can somebody explain why this 2133 is working so slow here?

Corsair 9-10-9-27 1866 1.5V
8.121, 8.222, 8.255, 8.249, 8.208 (SuperPI 1M)
8839 - Winrar

AIDA64

Read 21750MB/sek
Write 23589MB/sek
Copy 24092MB/sek
Time 41.1ns

SiSoft
Memory Bandwidth : Aggregate 23.65GB/s
Cache & Memory Latency - 19.4
Cache Bandwidth 142.45GB/s

G.Skill 9-10-9-27 1866 1.60V
8.099, 8.112, 8.133, 8.069, 8.045
9427 - Winrar

AIDA64

Read 21754MB/sek
Write 23606MB/s
Copy 24031MB/s
Time 40.8bs

SiSoft
Memory Bandwidth : Aggregate 23.78GB/s
Cache & Memory Latency - 19.3
Cache Bandwidth 143.54GB/s

G.Skill 9-9-9-27 1866 1.65V - FAIL - BSOD x50 Memory Management on SiSoft sandra benchmark
8.037, 8.061, 8.037, 8.057, 8.044
9613 - Winrar

AIDA64

Read 21843MB/sek
Write 23608MB/s
Copy 24200MB/s
Time 40.4bs

SiSoft
Memory Bandwidth : Aggregate
Cache & Memory Latency - 19.1
Cache Bandwidth


G.Skill 9-11-10-28 2137 1.65V
8.039, 8.071, 8.104, 8.060, 8.085
9776 - Winrar

AIDA64
Read 21509MB/s
Write 18720MB/s
Copy 20555MB/s
Time 37.4s

SiSoft
Memory Bandwidth : Aggregate : 19.5GB/s
Cache & Memory Latency - 19.1
Cache Bandwidth : 137.22GB/s

G.Skill 8-10-9-27 1668 1.65V
8.051, 8.060, 8.051, 8.048, 8.044
8617 - WinRAR

AIDA64
Read 19567MB/s
Write 22947MB/s
Copy 21409MB/s
Time 44.3s

SiSoft
Memory Bandwidth : Aggregate : 20.4GB/s
Cache & Memory Latency - 21.2
Cache Bandwidth : 136.50GB/s
post #2 of 8
Compare the ENTIRE timing table for both kits.

I bet the g.skill has much higher sub timings.
post #3 of 8
Thread Starter 
This is how G.Skill looks like. I assume "sub timings" you mean for example tWR tRFC etc.



Corsair is currently out of my motherboard, so need to replace the memory
post #4 of 8
Synthetic stuff like AIDA bandwidth is in no way indicative of real performance, it's just "a number".
What are the subtimings your board uses for 2133 on G.Skill?
post #5 of 8
OP, where you able to get 2133 with your 2600k at stock?
post #6 of 8
Thread Starter 
What do you mean by "at stock" ?
post #7 of 8
default CPU frequency?
post #8 of 8
Yes, as stated, default cpu clock rate.
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