Tom's Hardware > Forum > Motherboards & Memory > Memory > Incorrect memory speed being read

Incorrect memory speed being read

Forum Motherboards & Memory : Memory - Incorrect memory speed being read

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Hey guys, I recently purchased a new machine and put it together myself, had a couple of teething problems (mostly software related) but I have it all running fine now. I recently ran CPU-z just for kicks and its reading my memory speed at 400mhz which I thought cant be right since its PC6400, 4GB (2x2GB) Corsair DDR2 6400 2x240 DIMM unbuffered 5-5-5-18 64bit OS DHX to be exact.

I checked my BIOS settings and all the timings are set to auto, when I changed that to manual all the timings seems to be set correctly. I would have left it on auto but thought I'd ask you guys for advise before I did anything silly.

Heres the CPUz screenshot of what it reads-
http://i199.photobucket.com/albums/aa91/FinchRGG/cpuz.jpg

Heres my specs if it helps at all

Windows XP 32-bit home (I realise I'm loosing out on 1gb of ram)
MSi P7N Platinum motherboard
Intel Core 2 Quad Q9300, 2.5 GHz, 1333MHz

Thanks in advance people.

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It's called double data rate and it runs at half the speed you would think it does so 800 / 2 = 400 MHz. This is perfectly normal.

Reply to morga

It is fine. DDR2 is 400x2=800. Dual Data rate. Intel CPUs are Quad pumped.

No worrys. Good job.

Reply to roadrunner197069

^^^^agreed...

DDR2-800 runs at 400Mhz (400x2)
DDR2-667 runs at 333Mhz (333x2)
DDR2-533 runs at 266Mhz (266x2)

etc.etc

------------------------------ If fate really does exist, she hates my guys....
Reply to pinaplex

WRU sticky?

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Reply to leo2kp
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