i7 7700K - MSI Z270 Xpower

[erixx]

 

[erixx]

Just wanted to use this thread for posting little details of th is motherboard, cpu, etc.

I set 5000 Mhz and i could move around in Windows, but once I started BF1 it crashed.

I'm at 4800 with 1,3 v (1.3 v for the new world).
Everything seems fine, have been playing BF1 for a while.

I will post some of the goods and bads of this mobo.

So far, I'd like to thank @cadaveca for his reviews and comments.

 

[cadaveca]

You're NB clock is low, and because of that, that high ram clock isn't being utilized fully. Read should match write, not be ~16% lower. I can get 45ns latency @ 3600 MHz... and I'd look at what the board is setting for VCCSA...

This is why in that other thread I suggested lower-speed ram for 24/7 use. You've got all this bandwidth in that ram @ 4000 MHz, but it is clear (to me) that your system is incapable of using it all (as it is configured now).

 

[erixx]

Thanks Dave, I will look into all of this. One thing I have quickly checked is that this RAM kit has always been like that (faster Write) I keep these Aida Benchmark screenshots and it has always been the same no matter what settings are used.... I also have of HyperX and Corsair sticks and the Writes are much closer or equal to the rest. Damn, there is always something out of order... lol!

 

[erixx]

Updated with re-runs. This is just crazy!

Some news @cadaveca !
Trying to be organised:

CPU 4400, NB auto (=3900/4100)
RAM auto=3866 (xmp: 18-22-22-42, worse than your kit) Aida: 48000-57400-49500-46.7 3DMark: 9204
2nd run RAM auto: 49100-57300-47600-47.0

RAM 3600 (and trying this: 16-16-16-38) Aida: 46200-55220-4600-50.8 3DMark: 9196

NB 4400= sets itself back to 4100 (as shown in Aida Cache bench) and all results are worse

CPU 4600 NB 4200 Aida: 46000-56500-45300-52.0 3DMark 8900

CPU 4400 NB 4000 RAM manual 3866: 45600-53900-44300-57 ?!

Added finally this
CPU 4400 NB auto RAM manual at 4000 18-19-19-42 (copied from your review Cadaveca
AIDA: 50180 60375 51150 48 3D Mark: 9190

Is this weird or what? Seems that just XMP on auto is the best option.

 

[cadaveca]

It's how the tertiary timings work, IMHO, that causes this. Every board will react slightly differently. When you clock ram up, the tertiary timings do not scale automatically, and one of them is not good, causing hard faults, and leads to the deficit when you should have an increase.

 

[erixx]

Tertiary times... I see. It must be that. I will write the tertiary values of the Xmp profile down for reference. Warn me if you ever do an online seminar, Dave.

 

[cadaveca]

Tertiary times... I see. It must be that. I will write the tertiary values of the Xmp profile down for reference. Warn me if you ever do an online seminar, Dave.

That's the true difference right now between, say, a 4000 MHz kit and 4133 MHz kit; sure there is IC binning, but at the same time, get both kits, examine SPD, and you'll see differences. Then take the slower kit, and clock it up, you'll see it usually maintains the same secondaries, while the 4133 kit will have different ones. That doesn't mean that you'll get better clocks with those adjusted timings in every instance, but there is an impact there for sure that cannot be disregarded.