DRAM frequency not correct. CPU-Z showing 1599.1mhz on 3200mhz DDR4 (2x8) sticks

[deshipunk]

Per the title.. spent an hour or so looking thru similar threads. BIOS keeps showing 3200mhz

Timing/voltage looks right and I turned on XMP in the BIOS.

DRAM speed only shows 1599.1mhz on the Memory tab, but then SPD tab shows 1066mhz. So is the XMP profile working or not?

and trcd and trp is accurate as well. i paid for 18-18 not 20-20

Mobo is an MSI b450m mortar max.

btw, its corsair vengeance rgb pro

[FloRolf]

It is working

 

DDR stands for double data rate, so it's actually twice that. And 1600 x 2 is 3200.

[minibois]

TL;DR: your memory is running fine, it's running at 3200Mhz

 

The SPD tab just shows the JEDEC speeds, which are the default speeds (for DDR4). The memory tab actually shows the actual speeds which is 1599Mhz.

DDR = Dual Data Rate.

A Hz is a tick, DDR memory transfer up and down every tick, meaning 1600Mhz = 3200MT/s. Millions of transfers.

 

Motherboard and memory manufacturers for that reason call it 3200Mhz, but something like CPU-Z or Task Manager show it correctly, at (roughly) 1600Mhz.

The SPD tab just shows the default speeds the memory can use and the associated timings, i.e. 1600Mhz, 1.35v.

[AndreiArgeanu]

Your memory is completely fine, mine shows up the same.

[deshipunk]

2 minutes ago, minibois said:

TL;DR: your memory is running fine, it's running at 3200Mhz

 

The SPD tab just shows the JEDEC speeds, which are the default speeds (for DDR4). The memory tab actually shows the actual speeds which is 1599Mhz.

DDR = Dual Data Rate.

A Hz is a tick, DDR memory transfer up and down every tick, meaning 1600Mhz = 3200MT/s. Millions of transfers.

 

Motherboard and memory manufacturers for that reason call it 3200Mhz, but something like CPU-Z or Task Manager show it correctly, at (roughly) 1600Mhz.

The SPD tab just shows the default speeds the memory can use and the associated timings, i.e. 1600Mhz, 1.35v.

ok but what about trpd and trp? is it running ok? 

[Helpful Tech Witch]

DDR=Double data rate. 

 

(this should be added to the comunity standards:
Dont be a dick

Bo good to eachother

CPUZ shows 1/2 of what you payed for, DDR=double data rate)

[minibois]

3 minutes ago, deshipunk said:

ok but what about trpd and trp? is it running ok? 

The difference between 18 and 20 there will be minimal.

What likely happened is your motherboard tried out a couple of the XMP profiles (because memory can have multiple profiles) and picked out the one which worked most stable, which happened to be with higher timings.

[deshipunk]

thanks a lot everyone.