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DDR4 SODIMM Corsair 2666 MHz @665?!?


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Hi all!

I got a brand new notebook, Recoil 15.6 by Pc Specialist (based on tongfang gm5tn8w), equipped with i7 11800H octa-core and a RTX 3080 16GB, all on Windows 11 Home 64bit.

My RAM are 2x32 GB DDR4 SODIMM Corsair 2666 MHz (Total 64GB).

From BIOS it results MEMORY FREQUENCY 2667 MT/S

BUT...on Win 11, 3dMark displays a free of 1330 MHz on both slots, while CPU-Z displays a 665.1 frequency, FSB:DRAM 1:10, and CAS LATENCY values of 18-18-18-43-0.

It’s kinda weird...can anyone help me to understand If it is an hardware, software pr BIOS problem? MANY Thanks 🙂

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3Dmark displays the clock frequency (1333, with dual data rate memory makes for 2666mhz) so that's normal.

CPUZ on the other hand may be showing the Uncore frequency (the memory controller i believe), which is something different. you have to look on the timings table just below that, in the memory tab.

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15 hours ago, LeDoyen said:

3Dmark displays the clock frequency (1333, with dual data rate memory makes for 2666mhz) so that's normal.

CPUZ on the other hand may be showing the Uncore frequency (the memory controller i believe), which is something different. you have to look on the timings table just below that, in the memory tab.

@LeDoyen like this?

 

cpuz_memory.jpg.7d4ba918d64c2af2bf5c5e1987e28888.jpgcpuz_spd.jpg.83f2d46496590aa422aed5c5b0c3510c.jpg

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that looks weird, but maybe it's laptop specific. Could be they downclock even further to save power. at this point, no idea!

does it change when you load the CPU?

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21 minutes ago, LeDoyen said:

that looks weird, but maybe it's laptop specific. Could be they downclock even further to save power. at this point, no idea!

does it change when you load the CPU?

No, it remains the same value in CPU load too, and it is not laptop specific, since other users with my same Laptop model have the correct values. Regarding BIOS, it displays MEMORY FREQUENCY 2667 MT/S.

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i think CPU-Z kicked the bucket. It doesn't display the timings correctly either showing tRFC at 0 clock cycles which doesn't makes sense.

I looked on my laptop and it shows 1333 at FSB:DRAM of 1:20

Maybe try HWinfo64 instead

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3 hours ago, LeDoyen said:

i think CPU-Z kicked the bucket. It doesn't display the timings correctly either showing tRFC at 0 clock cycles which doesn't makes sense.

I looked on my laptop and it shows 1333 at FSB:DRAM of 1:20

Maybe try HWinfo64 instead

@LeDoyen this is HWinfo64:

image.thumb.png.e6d5a301c6e8b3123fa1196d8bbcea6e.png

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you're golden then, 1333mhz current clock.

HWinfo is updated constantly so i would trust it more than CPU-Z.

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HWinfo always displays the memory clock, not the DDR frequency (half of your 2666).

On my laptop too it reads 1333 for 2666mhz DDR4.

The previous version of HWinfo (6.x)  showed it a bit differently :

Memory Speed:   1333.3 MHz (DDR4-2666 / PC4-21300)
 

HWinfo 7.x only shows the memory clock. Maybe other users are still on HWinfo 6

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nop it was showing 1333, but my laptop has a 9th gen i7. maybe CPU-Z has trouble with 11th gen for laptops, no idea. It doesn't report the timings correctly either as i mentionned, with your tRFC at 0

Now that i think of it, i wonder if 11th gen laptop CPUs also have gear 1 and gear 2 settings in bios for memory, that would explain why it displays half the frequency in CPUz... uhm.. actually that must be it.

But still, CPUz shouldn't display it like that. In Gear 2 it used to display the memory frequency (~665), but under DRAM frequency it should be still 1333.

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