Kingston HyperX Savage DDR3 fails to operate at 2133 MHz, only reaching 1600
Kingston HyperX Savage DDR3 fails to operate at 2133 MHz, only reaching 1600
Hi everyone.
I purchased a new Kingston 16GB KIT (2x8GB) DDR3 2133MHz CL11 HyperX Savage Series RAMs, but they don’t reach the desired speed. They only operate at 1600 MHz, which is their default setting. I attempted various solutions: XML profiles (only one that lowers the CL to 9 for 1600MHz), adjusted CPU settings, disabled turbo mode, and tried manual configuration.
I also set the memory voltage to 1.60 or higher, adjusted VccSA to 11V, configured registers like tCL, tRCD, tRP, etc., and even tried running at 1866 MHz, but it failed to boot and restarted three times before returning to BIOS.
My system details:
CPU: i5 2500k@4,4GHz
Memory: ASRock P67 Pro 3
BIOS: version 2.0 (no updates for Ivy Bridge due to stability issues)
GPU: GTX 970
What could I be doing incorrectly?
It might be due to constraints in the memory controller of your CPU. Not all processors can achieve such high speeds, and to reach 2133, the IMC needs to be adjusted. The 2500k claims official support for up to 1333.
1.65 (or higher) Memory Voltage (is it stock 1.65v?)
1.200 VccSA
11 tCL
12 tRCD
12 tRP
30 tRASmin to 35 (it's always the first 3 clocks added up)
171 tRFC try to 41
7 tRRD to 8
Uncertain if this will allow higher clocking but at least it should let you boot and run without problems.
Change the timing settings
1.65 (or above) Memory Voltage (is it the standard 1.65v?)
1.200 VccSA
11 tCL
12 tRCD
12 tRP
30 tRASmin up to 35 (always adds the first three clocks together)
171 tRFC try to 41
7 tRRD up to 8
Uncertain if this will enable higher clock speeds, but at least it should allow startup and normal operation without problems.
Previously it was 1,60 or higher. Edited.
I also experimented with your recommended configuration, but still couldn’t boot (tried both 1866 & 2133). The tRRD maximum is 7, so I wasn’t able to reach 8.
1LiquidPC:
This might be due to a limitation in the memory controller of your CPU. Not all processors can handle higher speeds; to achieve 2133, the IMC needs to be adjusted. The 2500k only officially supports up to 1333 MHz, but you can still get better performance as shown here
http://www.eurogamer.net/articles/digita...e-i5-2500k
That article prompted me to upgrade to faster RAM. I had a 1333MHz 2x4GB setup, and performance improved noticeably even at 1666MHz in those games. Witcher 3, GTA V, BF4, Just Cause 3 all run smoother now.