A quick question about F3-1600C9D-16GXM

[electrolover]

Hi,

I have 4 pair of G.Skill ram and i have just bought F3-1600C9D-16GXM at last.

Cpu-z (memory) displays 9-9-9-24
on cpu-z (spd section):
max bandwith: pc3-10700 (667mhz)
manufacturer:G.Skill
part number: F3-16900C9-GXM



My question is why maximum bandwith seems 1333Mhz ram while i have 1600Mhz?
The other ripjaws i have ddr3 2x4gb 1600, 2x2gb 1600 and two 2x4gb 1866.

[Tradesman]

What shows in MAX BANDWIDTH is what CPU-Z pulle off the SPD of the DRAM as an initial boot speed (i.e. to match up with the mobos default) - a little better explained in this info thread I wrote:

http://www.gskill.us/forum/showthread.php?t=10565

[electrolover]

Thank you for your quick reply.

So, you mean

max bandwith: pc3-10700 (667mhz) is true for ddr3 1600mhz 16gb ram?

Did i understand correct? If not should i send back them where i bought for change?

edit: i also see on the ASUS p8p67 bios spd information, displayed max bandwith 1333mhz. i do not remember has or has not this issue for other gskills i have.

[Tradesman]

That's just the default boot settings for the DRAM when installed - you need to set it to 1600, which is the spec speed

[electrolover]

yes of course xmp and ddr3-1600 selected on the BIOS this is why i am asking this question.

does it usual to seem max bandwith (on the bios and cpu-z) 1333mhz even selected xmp and ddr3-1600 on the BIOS (i have the latest BIOS update -asus p8p67- i7 2600k - F3-16900C9-16GXM) ?

when bootup screen comes it shows 1600mhz but still i could not not sure because of the cpu-z and asus bios spd information.

if this kit faulty i will send it back to where i bought it.

[Tradesman]

Look at CPU-Z in the Memory tab, it will show the timings and the freq (which should appear as 800 since this is DDR (DOUBLE data rate) so 800 x 2 = 1600)....as I stated before, if you read the thread here:

http://www.gskill.us/forum/showthread.php?t=10565

it explains what shows in CPU-Z

[electrolover]

i have look at 4gb gskill on asus bios spd info and cpu-z, below you can see difference.
cpu-z and asus bios displays same spd info.both of them 1600mhz but my new ram seems 1333mhz.can we say this 2x8gb ram sticks faulty or not?thank you a lot for quick replies.

[Tradesman]

Look at the memory tab in CPU-Z and post it - the SPD tab is the sticks programming not what you are running and means nothing as I've explained

maybe this is better:

Hafıza sekmesinden değil, spd sekmesini kontrol edin.SPD sekmesi sadece size ?alışan, ne bilgi değildir programlama.Bellek sekmesinde bu 800. yaklaşık bir frekans g?stermek gerekir

[electrolover]

Both of them 800Mhz on the Memory tab, both of them okay.
My concern is, while both running at 1600Mhz why this 2x8GB sticks max bandwith seems 1333Mhz both CPU-Z and Asus motherboard BIOS?
Does it point an error or fault for ram or does it okay?

[Tradesman]

Did you read the thread about CPU-Z that I have referenced twice now. What shows in the Max Bandwidth window is nothing more than what the original install boot speed will be - it has nothing to do with how fast you are running or can run. It's nothing more than a specification....just like the timings may show 9-9-9-24 on the label, it doesn't mean you have to run at that or that is all it will run at

[electrolover]

okay thank you for the informations.

[Tradesman]

No problem