Ram timings

Hi, i've read up lots of stuff about meanins of the numbers in ram but what STILL confuses me is when people say like 2-2-5-2-2-3 and all that stuff, i need to know what order are the numbers in??? (eg. what the first no represents, 2nd etc...)

Thanks
Seal

ram timings

It will depend on the bios itself, and some may not have all 6 settings, some may have even more than that.

cas latency is always first and command rate is always last. Also an important one is generally skipped- bank interleave set to 4 way. Have to check my bios to tell you what the others are.

i have on my mobo in this order:

Cas Latency: 2
Bank Interleave: 4
DTA (TRP): 2
ATP (TRAS): 5
AT CMD (TRCD):2
DRAM Access time: 2T

Thats what i have been told to put it on for agressive timings and best performance.

Does that mean my ram is running at 2-4-2-5-2-2???

Actually, if your RAM can handle it, 1T Access time would be faster seal. But it seems like you're pushing your RAM's limits

All I know is how Sandra reports memory speeds. According to it's help file...

· SDRAM/DDR read/write/CL latency specification:
a-b-b-bR c-d-d-dW e-f-gCL

a - read page hit clocks for first item
b - read page hit clocks for follow-up items
c - write page hit clocks for first item
d - write page hit clocks for follow-up items
e - CL (CAS latency)
f - SDRAM tRCD (RAS to CAS delay)
g - SDRAM tRP (RAS precharge)


· RDRAM read/write/CL latency specification:
a-b-b-bR c-d-d-dW e/fCL

a - read page hit clocks for first item
b - read page hit clocks for follow-up items
c - write page hit clocks for first item
d - write page hit clocks for follow-up items
e - RDRAM tRCD (Row to Column delay)
f - RDRAM tCAC (Channel to Channel delay)

Click to expand...

So that's how I'd put it in my sig... Because I don't know of any other ways.

JigPu

I had basically the same question.

I had a full question I was about to post, but decided to Google

CAS latency - RAS-to-CAS delay - and RAS precharge time

I have a stick of Corsair XMS PC3500C2 which is listed at:

2-4-4-8-T1

CAS: 2
RAS to Cas delay: 4
RAS precharge: 4
Active to Precharge Delay: 8 <--- not 100% sure, someone prove me wrong?
Dram timing:1T/T1

My Mobo, Albatron PX845PEV Pro(Pheonix Bios) gives the options of:
CAS - 1.5, 2.2, 5, or 3
RAS to CAS delay - 2 or 3
RAS precharge - 2 or 3
Active to precharge Delay - 5, 6, or 7
(no "DRAM access time" setting that I've found yet, but I just got this mobo today)

So it seems I'm running my PC5300C2 at 2-3-3-6, using the #s i n the Bios, and if I'm actually correct with the above.

I also have a "Refresh mode select" with options of 15.6us, 7.8us, or 64us available, but don't know what it means... yet..

Someone please tell me if I'm correct or not!!

same motherboard, same question

bump!

Very good question. I was wondering the same thing.