CPU-z is reporting my ram is DDR 400

[clarkey01]

Is this just a bug from CPU-Z? are there any other programs that can give me a reading ?

I have set the speed in my bios and saved changes, it's new ram (Kingston HyperX 4GB (2x2GB) DDR2 8500C5 1066MHz Dual Channel )

Cheers fella's

 

[Udgnim]

I wouldn't worry about it too much

I think most DDR2 1066 RAM are cherry picked DDR2 800 modules that the manufacturer's have tested to be capable of running at 1066

here's a pic of my Corsair pair in CPU-Z

http://img193.imageshack.us/img193/2134/xcvdsfg.jpg

 

[betaflame]

You generally have to manually set the clock speed, timings, and voltage for these modules. Sometimes the motherboard can read the profile for you though, which is nice. Generally doesn't change the voltage though.

 

[Yellowbeard]

Are you reading the SPD tab or the MEMORY tab?

 

[clarkey01]

Originally posted by: Yellowbeard
Are you reading the SPD tab or the MEMORY tab?

SPD says 527Mhz and memory tab reads its as PC6400

 

[Yellowbeard]

It should be the other way around. SPD will show 6400 as that is what is required at boot up. The memory tab will show the actual frequency. 527mhz = DDR 1054.

 

[myocardia]

clarkey, 400 Mhz RAM is not DDR 400, it's DDR 800. BTW, RAM speed makes so close to zero difference these days, that it isn't even worth your time worrying about.

 

[clarkey01]

Originally posted by: myocardia
clarkey, 400 Mhz RAM is not DDR 400, it's DDR 800. BTW, RAM speed makes so close to zero difference these days, that it isn't even worth your time worrying about.

Yeah sorry, wasn't awake when I wrote that ! true but I like to squeeze every inch

 

[Yellowbeard]

Based on what you have posted, you are running at DDR 1054.

 

[reallyscrued]

Originally posted by: clarkey01

Originally posted by: myocardia
clarkey, 400 Mhz RAM is not DDR 400, it's DDR 800. BTW, RAM speed makes so close to zero difference these days, that it isn't even worth your time worrying about.

Yeah sorry, wasn't awake when I wrote that ! true but I like to squeeze every inch

A great stance on overclocking and also a fine way to masturbate.

Memory speeds don't mean squat. OC your memory and see what effects it has in real games, synthetic benchmarks need not apply. Trust me, chicks won't pounce on you over SiSoft Sandra scores.

 

[gammaray]

It's not that hard to setup your memory speed and voltage in your bios, if you need help doing it, just ask.

 

[clarkey01]

Originally posted by: gammaray
It's not that hard to setup your memory speed and voltage in your bios, if you need help doing it, just ask.

I did it right away, I was just taken back by CPU-z saying I was running at DRR 800, however my frequency says 527 Mhz so I am actually ok

 

[basslover1]

I know this is a slightly old post, but my Kingston HyperX is running at 714Mhz but it is DDR2 1066, anyone have some insight on why it's running so slow?

 

[taltamir]

DDR is a trick for doubling the rate of data... DDR2 applies it twice for a quadrupling. DDR3 applies it 3 times... a better name would have been DDR^2 or DDR^3.
For some obscure reason it shows you the speed one less then max... so if DDR2-800 operates at effective 800mhz by taking a base speed of 200 mhz and doubling it and then doubling it again... it will display your speed as 400mhz, instead of 200 (no ddr effect) or 800 (effective speed). I haven't a clue as to why it does that.

Technically anything above 800mhz for DDR2 is simply factory overclocked DDR2-800. And it will not list its capabilities in the ram itself. You have to manually set the advertised speed and timings in the mobo. otherwise it will operate at DDR2-800 speed (with a few rare exceptions where it does automatically set it up.. like nvidia's SLI memory)

 

[alexruiz]

Originally posted by: betaflame
You generally have to manually set the clock speed, timings, and voltage for these modules. Sometimes the motherboard can read the profile for you though, which is nice. Generally doesn't change the voltage though.

The gigabyte GA-MA790x-UD4P can also adjust the voltage based on the EPP reading