Sign in with
Sign up | Sign in
Your question

OCZ DDR2 800 showing in bios as 667

Tags:
  • CPUs
  • DDR2
  • BIOS
  • OCZ
Last response: in CPUs
Share
October 30, 2006 5:51:10 AM

I ordered some memory for my new system a couple weeks ago, nothing on the OCZ package said it was DDR2 800, so i figured well its on my order reciept. well in the bios it says 667 mhz. is this wrong then? should it be saying 800 in the bios? anywho, thanks in advance

More about : ocz ddr2 800 showing bios 667

October 30, 2006 7:20:55 AM

isn't there any label on the memory sticks? or on their box?

anyway, maybe that memory works at 800MHz, but not at 1.8V. Maybe it needs more voltage for 800MHz, so it is running at 667MHz. (Just a guess)
a c 85 à CPUs
October 30, 2006 8:36:27 AM

what mobo are you using, some of them will not support 800 and downclock it to 667...
Related resources
October 30, 2006 11:51:47 AM

Usually most mobo's that support DDR2-800 merely means they support an OC up to 800, even though most mobo's go past it anyways. The default speed for most mobo's will be 667 (I know this is the case for the 975XBX which you can OC higher).
a c 487 à CPUs
October 30, 2006 12:30:40 PM

It could just be a minor BIOS error reporting the wrong RAM speed. The MSI 975X Platinum motherboard has a similar issue. My DDR2 667 RAM defaults to DDR2 533 speed. Also DDR2 800 RAM defaults to DDR2 667 speed.

Simply change the FSB from 333MHz to 400MHz and you should be fine. Also check your RAM voltage and change it to voltage based on the RAM specs.
October 30, 2006 1:06:25 PM

That is what I am thinking as well. Unless we know the actual mobo Tydalwave we can't give you a specific answer. The memory is rated for DDR2 800 which means it will run at 400Mhz at the specified timings... but you also need to get the motherboard to support DDR2 800 out of the box, otherwise you are going to have to OC or change the Memory:FSB ratios to get it to run right.

I use DDR 500 with my sig rig, but the motherboard only supports DDR 400, typical for all socket 939 mobos. However, a quick increase of the FSB from 200 to 250 gives me my DDR 500. Furthermore, the DDR 500 shows up as DDR 400 in the bios and if you use CPU-Z the spd timings and speed information are stated as DDR 400. It seems to be a quirk of the memory segment. I remember the first time I saw that on my Mushkin, it said DDR 400 on the SPD and I got ticked.... then I figured it all out through trial and error. Another words, don't worry you got DDR2 800, you just have to work to get it to run at that :wink:
October 30, 2006 3:02:13 PM

Yeah, Superfly explained it better, I was in a kind of time-constraint here at work.

The memory you buy is the rated speed, which in your case means absolutely nothing to the mobo. It'll automatically run it at the speed in which it deems fit. You'll have to change the FSB in order to hit the speed your memory is rated for (whether your mobo allows you to do that depends on make and model).

Either way, the problem here isin't the memory, its the mobo...

And now that I think about it, this is the CPU section... this should go in either mobo or memory... shrug.
October 30, 2006 4:12:22 PM

Quote:
Yeah, Superfly explained it better, I was in a kind of time-constraint here at work.

And now that I think about it, this is the CPU section... this should go in either mobo or memory... shrug.


I totally understand... I barely find time to post between classes 8O

On another note... people should really tag these in the right forum, not because it is so wrong to put it somewhere, but the really smart people peruse their specific sections making it far more likely to get a response if it is in the right section, FYI. Just trying to help the OP :p 
October 31, 2006 4:58:02 AM

Sorry for posting in the wrong thread, im military and have limited use of computers during the job so did a quick post. just had time to check it today. anywho my motherboard is the MSI 975x Platinum Power Up edition. still showing 667 in the bios. i believe my default clock for the fsb is 266 is this correct? ( in windows its showing 1.87 ( core 2 duo 6300 ) so where is the 333 at? anywho roll call. thanks in advance
October 31, 2006 11:32:53 AM

The 333 comes from the FSB:Mem Ratio that is set in the BIOS. For 667 the FSb:Mem ratio is 5:4 or 1.25:1, so 1.25 x 266 = 333.

Side note: Not coming down on you, just trying to help :) 
October 31, 2006 11:33:56 AM

MSI's website:

http://www.msi.com.tw/program/products/mainboard/mbd/pr...

Quote:
MSI Reminds You...
• DDRII 800 needs to work with Intel Conroe CPU with FSB1066.
• The default memory frequency is DDRII 667, you can set to 800 in BIOS settings.


Hope that answers your question? I'm not sure how the bios of the MSI is, I can do some more research and see if you actually have to raise the FSB or you could just specify 800MHZ in the bios setting (I suspect the latter a lot more than the former)
October 31, 2006 11:39:52 AM

in the MSI bios, the 667 is "greyed out" so its not able to be changed, when i raise the FSB it overclocks my CPU doesnt it? i dont mind overclocking at all.
a c 487 à CPUs
October 31, 2006 1:05:12 PM

Quote:
in the MSI bios, the 667 is "greyed out" so its not able to be changed, when i raise the FSB it overclocks my CPU doesnt it? i dont mind overclocking at all.


I have the same motherboard, just increase the FSB from 333MHz to 400MHz. The BIOS simply auto-detects the RAM as DDR2 667. So even if you increase the FSB to 400, the RAM is still identified as DDR2 667.

The mis-identification will not in anyway decrease you the performance. It's kinda like someone calling a Corvette a Camero instead.
October 31, 2006 1:28:54 PM

Your stock FSB is 266 on a C2D not 333.... so to get 800 on a 667 setting you have to set it to 320
October 31, 2006 2:11:23 PM

Yeah, just go the OC route, your system should be able to take it no problem. The memory is guaranteed to go to at least a 400 MHZ FSB (1:1 ratio)... whether the rest of the system can keep up is up to you.
a c 487 à CPUs
October 31, 2006 3:07:01 PM

Quote:
Your stock FSB is 266 on a C2D not 333.... so to get 800 on a 667 setting you have to set it to 320


Oops, I meant to type 266 not 333. Anywaste, for DDR2 800 RAM it's simply changing the FSB to 400 and setting the clock multiplier to 1:1.
October 31, 2006 4:49:33 PM

Quote:
Your stock FSB is 266 on a C2D not 333.... so to get 800 on a 667 setting you have to set it to 320


Oops, I meant to type 266 not 333. Anywaste, for DDR2 800 RAM it's simply changing the FSB to 400 and setting the clock multiplier to 1:1.

Fair enough, just making sure we get the right settings :wink:
November 1, 2006 11:45:41 AM

hello again, well i went home and found that my bios has FSB memory settings, starts out as

Auto
1:1
1:?
1:25
1:50
etc.

i can select 1:50 i believe and it makes the memory read 800, but..it wont boot with that setting on...

again, the normal FSB is 266 not 333, so go to 320? or 400 like you are saying, 266 to 400 is quite the jump for my lil hsf.

anywho thank you for your posts
a c 487 à CPUs
November 1, 2006 12:40:30 PM

Quote:
hello again, well i went home and found that my bios has FSB memory settings, starts out as

Auto
1:1
1:?
1:25
1:50
etc.

i can select 1:50 i believe and it makes the memory read 800, but..it wont boot with that setting on...

again, the normal FSB is 266 not 333, so go to 320? or 400 like you are saying, 266 to 400 is quite the jump for my lil hsf.

anywho thank you for your posts


Don't worry about what the BIOS automatically detects the RAM at. It is a minor BIOS issue that MSI is working on and is in the beta stage. All you have to do is set the FSB to 400 and a ratio of 1:1.

The formula works out like this:

FSB x Ratio x 2 = 400MHz x 1 x 2 = 800MHz

I don't recall which CPU you have. If it is the E6600 then your CPU will be running at 400MHz x 9 clock multiplier = 3.6GHz.

----------------------

If you set the FSB to 266MHz and a ratio fo 1.5 then it work out as follows:

FSB x Ratio x 2 = 266MHz x 1.5 x 2 = 800MHz

If it is the E6600 then your CPU will be running at 266MHz x 9 clock multiplier = 2.4GHz.
November 1, 2006 1:53:24 PM

Yeah, you might want to double check the voltage the mobo is sending to the ram, OCZ can ususally guarantees up to 2.2V so if its not booting, then just up the mem voltage a little.

If you need any more help OC'ing, you can always check out Wusy's Conroe OC'ing guide.
!