M5A99X Ram Settings Help..

Rocko1976 · Jan 20, 2015

I have the M5A99X Evo R2.0 and Corsair Vengeance 1600mhz(2x4gb). The ram is showing up as 1333mhz.

What is the easiest way to make the ram work at 1600mhz? Do I simply change the ram frequency speed in the bios or do I also need to change the timing, voltage, etc?

Thanks.

ihog · Jan 20, 2015

1. Why do you want to run your RAM at 1666 MHz? The difference between 1600 and 1666 MHz is negligible, even in synthetic benchmarks, especially since you're likely going to have to lower your latencies and timings to achieve 1666.
2. To have your RAM run at its rated frequency, latencies, and timings, set the XMP profile in the bios.

Rocko1976 · Jan 21, 2015

I meant 1600. My mistake. The mb defaulted to 1333.

ihog · Jan 21, 2015

So did you try setting the XMP profile?

Rocko1976 · Jan 21, 2015

It's an AMD CPU. No XMP profie.

ihog · Jan 23, 2015

Shoot, I edited that last post, but I guess it didn't stick.

To achieve your ideal RAM settings, you have to set DOCP. This will OC your CPU as well, so you'd have to set those settings back to normal.

Or you could set your RAM to 1600 MHz and set the timings and latencies to the values advertised for your RAM.

I recommend the second option.

Rocko1976 · Jan 23, 2015

Ok, so forgive me, I am a noob when it comes to memory. I would enter these values that were on Corsairs page.

SPD Latency
9-9-9-24
SPD Speed
1333MHz
SPD Voltage
1.5V
Speed Rating
PC3-12800 (1600MHz)
Tested Latency
9-9-9-24
Tested Speed
1600Mhz
Tested Voltage
1.5V

As of yet I have only changed the memory frequency in the bios to 1600mhz.

ihog · Jan 23, 2015

Yup, do that.

Calvin7 · Jan 23, 2015

Instead of using D.O.C.P. you can set to [Manual]
Set Memory Clock to 1600MHz
Set first four setting in DRAM Timings beginning with Cas Latency to 9-9-9-24
You can set Command Rate to 1T or 2T
Dram voltage is 1.5v by default

Rocko1976 · Jan 25, 2015

Calvin7 :

Thanks. I messed around with this. I tested just setting memory clock to 1600mhz and leaving all timing settings auto vs setting the timing manually. It benchmarked worse with the settings set manually. Now they are just back to auto. I assume I missed something.

Rocko1976 · Jan 25, 2015

Calvin7 :

Thanks. I messed around with this. I tested just setting memory clock to 1600mhz and leaving all timing settings auto vs setting the timing manually. It benchmarked worse with the settings set manually. Now they are just back to auto. Auto set the timing at 11-11-11-28. I assume I missed something.

ihog · Jan 25, 2015

That's weird. Really weird. What'd you use to benchmark your RAM? Are you running the RAM in dual channel mode?

Rocko1976 · Jan 26, 2015

ihog :

Yes, dual chan. mode. Maxmem2 for the benchmark.

ihog · Jan 28, 2015

I got nothing.

Rocko1976 · Jan 28, 2015

ihog :

Thanks for trying.

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