Team group 8pack Ram

Chrisc · 19 Dec 2020 at 14:51

Good afternoon,

i have just received 32gb of the team group DDR3600 memory. its performing brilliantly using the DOCP settings within the bios. However, CPU-Z shows its running 3:54 rather than the 1:1 which i believe is best suited particularly for the ryzen chips?

how important is the 1:1? as i cannot see a setting to change it? ive adjusted the FCLK to 1800 which is what i have done previously but it still shows 3:54. I am wondering whether this could be how the ram has been set up with the 8pac profile?

im a complete novice with timings etc. . so any information would be greatly appreciated.

Guest2 · 19 Dec 2020 at 15:29

You’re all good.
3:54 is 1:1 for 3600Mhz / FCLK 1800Mhz.

3:57 is 1:1 for 3800Mhz / FCLK 1900Mhz

Chrisc · 19 Dec 2020 at 15:34

Guest2 said:
You’re all good.
3:54 is 1:1 for 3600Mhz / FCLK 1800Mhz.

3:57 is 1:1 for 3800Mhz / FCLK 1900Mhz

Legend, thank you so much

Guest2 · 19 Dec 2020 at 15:40

Chrisc said:
Legend, thank you so much

No probs

I actually have no idea how 3:54 / 3:57 ratios work with RAM and Ryzen. 3:54 is obviously not 1:1, 1:1 is

I guess the FLCK must just be 3:54 / 3:57, making it 1:1 with the infinity fabric or something. I know just the man to explain the 3:54 ratio thing... @MrPils ?

Chrisc · 19 Dec 2020 at 17:31

Guest2 said:
No probs
I actually have no idea how 3:54 / 3:57 ratios work with RAM and Ryzen. 3:54 is obviously not 1:1, 1:1 is I guess the FLCK must just be 3:54 / 3:57, making it 1:1 with the infinity fabric or something. I know just the man to explain the 3:54 ratio thing... @MrPils ?

I have no idea, I thought 1:1 was how it should be. But I appreciate your explanation.

GregI · 19 Dec 2020 at 18:51

3:54 is taken from BCLK being 100.

54/3 = 18. We times this by the BCLK. 1800 to get our DR/fabric speed. Obviously you then double this because DDR = 3600.
56/3 for 3,733
57/3 for 3800

Basically CPU-Z knows nothing about fabric speed or any of that which is why these ratios are present. ZenTimings or Ryzen Master will allow you to properly see pertinent info such as 1:1 operation.

Chrisc · 20 Dec 2020 at 13:54

GregI said:
3:54 is taken from BCLK being 100.

54/3 = 18. We times this by the BCLK. 1800 to get our DR/fabric speed. Obviously you then double this because DDR = 3600.
56/3 for 3,733
57/3 for 3800

Basically CPU-Z knows nothing about fabric speed or any of that which is why these ratios are present. ZenTimings or Ryzen Master will allow you to properly see pertinent info such as 1:1 operation.

Thanks very much, that has explained it perfectly

Cadder · 22 Dec 2020 at 23:07

@Chrisc are you tweaking this kit any more?

I've never done anything like this before but I'm looking to see if I can tweak the memory settings on this kit for better performance without stepping into risky territory.

Chrisc · 23 Dec 2020 at 13:18

Cadder said:
@Chrisc are you tweaking this kit any more?

I've never done anything like this before but I'm looking to see if I can tweak the memory settings on this kit for better performance without stepping into risky territory.

to be honest i havent, i assume the XMP profile is tuned by 8pack so there would be no need to do so.

Cadder · 23 Dec 2020 at 14:00

This is my kit according to HWiNFO64:

y4mBNr2Sh6I2hx9Zn7kWD05B8a2EC4pmbb3tymdYDBsCkbImp5hzofyA--ISlx7t_Nx-fSKqFcRq80wZ5rWWKUBcQ8tme8uy9kfDH-78QD2Lv1R-zX91WDUP6ydBRs1r_9p9YeFM_eK_esOUwEXmRBsqGti59JpfDRQhvFkqwXC9D-EQacSAxRwqwhDfuJLYu13

All I did was switch XMP profile in BIOS. Is yours looking the same?

Chrisc · 23 Dec 2020 at 21:34

Cadder said:
This is my kit according to HWiNFO64:

All I did was switch XMP profile in BIOS. Is yours looking the same?

yep, exactly the same timings

Cadder · 24 Dec 2020 at 14:47

Fantastic cheers. Everything is running fine so I won't pursue this avenue for now.

Stu · 28 Dec 2020 at 00:54

Chrisc said:
to be honest i havent, i assume the XMP profile is tuned by 8pack so there would be no need to do so.

Every system is slightly different, and XMP is still somewhat general... You should have more performance available with further tweaking.

CptPanic · 1 Jan 2021 at 06:24

Is anyone running this with Asus crosshair viii hero and a 5000 series? Currently running bios version 3003 and just selecting d.o.c.p standard and 3600 profile it won't boot, if I override the FLCK and frequency to anything below 1800 / 3600 it is fine. (haven't tried above yet)

This is using 4 x 16GB modules

Stu · 2 Jan 2021 at 00:16

CptPanic said:
Is anyone running this with Asus crosshair viii hero and a 5000 series? Currently running bios version 3003 and just selecting d.o.c.p standard and 3600 profile it won't boot, if I override the FLCK and frequency to anything below 1800 / 3600 it is fine. (haven't tried above yet)

This is using 4 x 16GB modules

Try with 2 X 16GB to see if all working.