Anomoly in DDR SPD display

[hakme2deth]

Just bought some Kingston HyperX PC4000 512MB pair (KHX4000K2/512)

Ran it in Sandra and in CPU-Z and both say its PC3200.

What gives...?

e.g.

CPU-Z

CPU-Z version 1.20
Memory Modules Serial Presence Detect (SPD)

Module #1

General
Memory type DDR-SDRAM
Manufacturer (ID) Kingston (7F98000000000000)
Size 256 MBytes
Max bandwidth PC3200 (200 MHz)
Part number K

Attributes
Number of banks 1
Data width 64 bits
Correction None
Registered no
Buffered no

Timings table
Frequency (MHz) 133 166 200
CAS# 2.0 2.5 3.0
RAS# to CAS# delay 2 3 3
RAS# Precharge 2 3 3
TRAS# 6 7 8


Module #2

General
Memory type DDR-SDRAM
Manufacturer (ID) Kingston (7F98000000000000)
Size 256 MBytes
Max bandwidth PC3200 (200 MHz)
Part number K

Attributes
Number of banks 1
Data width 64 bits
Correction None
Registered no
Buffered no

Timings table
Frequency (MHz) 133 166 200
CAS# 2.0 2.5 3.0
RAS# to CAS# delay 2 3 3
RAS# Precharge 2 3 3
TRAS# 6 7 8


and Sisoft Sandra Pro


Memory Module(s)
Memory Module 1 : Kingston 043C02A3 256MB 8x(32Mx8) DDR-SDRAM PC3200U (CL0 up to 200MHz) (CL429496729.1 up to 167MHz) (CL429496728.6 up to 34MHz)
Memory Module 3 : Kingston 033C0EA3 256MB 8x(32Mx8) DDR-SDRAM PC3200U (CL0 up to 200MHz) (CL429496729.1 up to 167MHz) (CL429496728.6 up to 34MHz)

[Firelord-OCHW]

Not a new enough version??

[sjohnson]

Sandra looks like it's bugged (what else is new).

CPU-Z looks fine. If you mean CPU-Z reporting PC3200 when you bought PC4000, programming the SPD to JEDEC specs is common.

My Winbond BH-5 PC3200 reports as PC2700 in c'tSPD, CPU-Z and Sandra. It doesn't care that it's PC2700 running at PC3600 spec though, works just fine...

[mkleingeld]

Yea, strange stuff
According to spd mine at rated speed use timings of 2.5-4-4-9.

But who cares what is in spd if in real life it goes way beyond those timings :)

What does your mem do in real life?

[hakme2deth]

Originally posted by mkleingeld
Yea, strange stuff
According to spd mine at rated speed use timings of 2.5-4-4-9.

But who cares what is in spd if in real life it goes way beyond those timings :)

What does your mem do in real life?

Only just installed it, and it's the second set. (first set failed tests in Memtest so RMA'd it)

Left it running at 189 for now, and will start to ramp it up over the next few days. I like to burn it in slowly, so I can compare my Seti times ;)

[chris4521]

my geil pc3500 (copper heatspreaders, cl2.5) reports as pc3200 in the newest version of CPU-Z

[hakme2deth]

I seem to have a problem...

I can't get it any higher than 189 FSB and stable.

Its an Abit IS7-E 1.0
P4 3.06Ghz (B?) 533Mhz
Kingston HyperX PC4000

Do I have to do any pin mods?
Can't get it to do a a 4:5 ratio.
This is only available at 800Mhz but locks up.

I have seen a post where 4 pins in one corner enables 4:5. Do I need to do this or is there some other way?

Any ideas?

[kromosto]

if i am not wrong ratios come from chipset for 533mhz cpus i think the best chip is sis655 which had lots of ratios

[mkleingeld]

I ran a 2.8b in my max3 for a month and that had the fsb:mem 4:5 divider.
Strange if the IS7 doesn't have it.

Edit: You say 189 fsb that is 189 x 23 = 4347mhz. If that is what you mean, no wonder it locks up. But I guess you don't mean to say that?

[ZhaoYun]

I think he meant to say a 3.06Ghz running at (23 x 151fsb = 3473Mhz) with the mem stuck at 189Mhz. Btw, have you tried relaxing the timings and/or increasing the vmem for stability?

[hakme2deth]

Originally posted by ZhaoYun
I think he meant to say a 3.06Ghz running at (23 x 151fsb = 3473Mhz) with the mem stuck at 189Mhz. Btw, have you tried relaxing the timings and/or increasing the vmem for stability?

Correct on all counts ZhaoYun.

Have now dropped it down to 23 x 145 (mem @ 189) due to a freeze - but this is because I don't want to overvolt CPU too much. I went for the 3.06Ghz as I wanted to fit a Zalman CNPS7000cu to keep it as quite as possible, but I also wanted to overclock the FSB as much as possible - hence the Kingston HyperX (Seti likes high FSB)

Memory timings have been very relaxed but this doesn't make a difference. Its Kingston HyperX (probably the Samsung modules not Hynix - but I haven't removed the heat spreader)

SPD for this memory is as follows...

Timings table
Frequency (MHz) 133 166 200
CAS# 2.0 2.5 3.0
RAS# to CAS# delay 2 3 3
RAS# Precharge 2 3 3
TRAS# 6 7 8

I have it set to SPD so the timings are 2.5-3-3-7 (according to CPU-Z) but as this memory should easily get to 255Mhz and maybe even 260, I would think its not a memory problem.

Its just that its a locked CPU and the IS7-E won't allow me to use better ratios :(