RAM value lower than what is said? 1600 becomes 1333?

[Guido Pa]

Hi,


Motherboard Asus B85-plus


I got the Corsair Vengeance LP CML16GX3M2A1600C10 two times 8G and also Kingston ValueRAM KVR16N11/8 two times 8G, all 1600Mhz

But in Specyy and in CPU-Z the Corsairs get a value of 667Mhz.

How is this possible?

The Kingston memory gets the right value of 800Mhz

I tried XMP, change value setting of the DDR3 in Bios, the Corsairs give 1333Mhz 667Hz

Greetings,

Guido

PS: I have the corsairs for two years that run perfectly with a pair of kingstons of 4G, I know mixing is not advised but I never had problems with i.

PS: the Kingston is new memory I inserted this weekend and everything works fine

 

[zyh1987]

i think you need to manually set the memory speed to 800 Mhz, and the timing from the slower ram, which will be the 11-11-11-28, and voltage on 1.5 and leave everything on auto.

 

[TJ Hooker]

The values listed for individual sticks in the "SPD" section are just reading the different profiles that programmed into the stick, not what the sticks are necessarily running at. For whatever reason Speccy lists the "max bandwidth" for each stick as being the highest speed JEDEC profile in the table (the 800 MHz speed for the Corsair is listed as XMP profile not JEDEC).

The speed your sticks are actually running at is higher up, under "Memory". You're running at 800 MHz memory clock (1600 MHz effective). So you're good.

 

[zyh1987]

The values listed for individual sticks are just reading from the timings programmed into the stick. For whatever reason Speccy listed the "max bandwidth" for each stick as being the highest JEDEC speed in the timing table, and the 800 MHz speed for the Corsair is listed as XMP not JEDEC.

The speed your sticks are actually running at is higher up, under "Memory". You're running at 800 MHz memory clock (1600 MHz effective). So you're good.

i agree, OP is good. looks like the kingston ram is able to run @ higher than jedec specified speed.

 

[Guido Pa]

The values listed for individual sticks in the "SPD" section are just reading the different profiles that programmed into the stick, not what the sticks are necessarily running at. For whatever reason Speccy lists the "max bandwidth" for each stick as being the highest speed JEDEC profile in the table (the 800 MHz speed for the Corsair is listed as XMP profile not JEDEC).

The speed your sticks are actually running at is higher up, under "Memory". You're running at 800 MHz memory clock (1600 MHz effective). So you're good.

If I change the DDR to atuo I get 667hz, if I set it to 1600hz I get 800Hz in Speccy and CPU-Z so what do I choose? Is there that much difference bewteen 1333hz or 1600hz?

 

[TJ Hooker]

Well, based on the Speccy screenshot you posted you're currently running at 1600 MHz. So unless you're experiencing any issues, I'd just leave it as you have it.

 

[Guido Pa]

Well, based on the Speccy screenshot you posted you're currently running at 1600 MHz. So unless you're experiencing any issues, I'd just leave it as you have it.

Ok.

Thank you all!

PS: wasn't there a solved option here?