Hi guys,

I used to build PCs and OC them etc but last time I did that was in the mid 2000s. Think AMD Barton/Throughbred time. Anyway, recently at work needed a much more powerful workstation for crunching large amounts of data and the gaming laptops we had in the office were simply not cutting any more. So I thought I could just wing it and put together a system to do the data crunching. A rough outline of the build is

CPU : 7950X
MB : ASROCK X670E PRO
GPU : ASUS RTX4070Ti
SSD 1 : ACER Predator 1TB PCIE4
SSD 2 : ACER Predator 2TB PCIE4
Casing : NZXT H9 Flow
RAM : KINGSTON Fury Beast RGB 64GB (32x2) x 2
PSU : ASUS 1200W
CPU Cooler : NZXT Kraken 360 RGB Black

The PC works out of the box and I am aware of the fundamental behaviour of the newer CPUs where they push power and clock speeds till hit max temp then throttle back but there are a few things that I am unsatisfied about. Hoping to get some pointers here

1) Its not the temperature of the CPU that bothers me, in fact I am expecting it to hit the 90+ deg C level but its how fast it reaches it. I tied the cooler fans and pump speed to the CPU temp so basically once its more than 60 deg C, the fans and pump are running at full tilt. Coolant temp never exceeds 32 deg C but the CPU reaches 90 in a very short time (like not more than 10 seconds). This happens only when I am crunching data. Could it be due to insufficient pressure between the pump and IHS? Or insufficient thermal paste? I just left whatever the came with the cooler on it and just used it.

2) I tried using the Ryzen master to try to come up with a profile. It came up with a -40 profile but once applied, the system would never boot up. So far I used a less aggressive number like -10 and its stable so far. I find that the temps still rocket to 90+ but just not so fast and it can hold all the cores at about 5.450 GHz about 50% longer. is there a detailed guide on how the voltages and clocks relate to each other. Its so confusing relative to 20 years before where it was just FSB x multiplier

3) I have all the RAM running but I can never get it past 4000 MT/s. I know I made the mistake of not making sure the RAM was AMD expo certified. Is it possible to manually push the 4 sticks to at least 5200 speeds?

Just hoping for tips for troubleshooting and if possible any guides for modern system overclocking/tuning. I prefer PDFs to YT videos (old school mah)

That's why I tied the fan and pump curve to CPU temp and not the coolant temp. At least if it spikes, the system tries to catch up as soon as possible. But still worrying that I cannot hold the temps low enough.

I knew the RAM speed wouldn't be that high although the ones that I am using are listed in the motherboard certified lost but only for 2 units. But to do what you said like manual tweaking, I wanted to find a guide so that I can increase the signalling voltage to see if it improves anything. Also looking for information on drive strength. From the manual, it's just a number. Is it in mA? Or just a scalar number?

open to other quote??

EXPO problem unending

Thanks for the link. Will go through it slowly later.

Like Babylon said, the system is working. It's just I want to try and fine-tune the performance as I am using the system to do map processing. I roughly process about 100k images at a go resulting in chunks of maps about 30-50gb each. So I am hoping if tweaking the system a bit will improve the performance as typical processing time for one block is about 5 days non stop so every little bit helps.

Luckily for me this machine was asked to be put together by a client and I use to process his data. Later will have to give him back this machine when the project is over. I was using this to see if I should go with consumer CPU or something like a threadripper for own purchase

They are jedec at 5200........when only 2 sticks. If you look at the AMD Ryzen website for all the 7xxx CPUs, the CPU is supposed to run 2 sticks at 5200 and 4 at 3200. But I have also found people having success at getting their systems running 5200 with 4 sticks. Not without getting some work done though. And sorry for sounding like some old faggot but having more than 20 different voltages with no proper description in the bios and in the bios manual doesn't help me tweak what I want to tweak safely.

Sorry if unhappy to unnecro an old thread. Just an update. Updated MB to latest AGESA (ComboAM5 1.1.0.3)

Now able to hit 4800MT/s. Basically I have set the timing parameters to match XMP @ 5200 so the CAS and other timings set to match the XMP values even the voltages. But only difference is I have set the clock speed to 4800. So far stable running all banks firing meaning the RAM is 100% utilised and have been running for about a week non-stop. Once current batch of data delivered, I will see if can push to 5200.

is a widespread issue now

more will come, bcoz 14th gen still very new

95 is.. abnormal?

check the thermal paste

Hi Guys,

Just an update to show where my "bottleneck" and main cause for concern is

Here you can see the loading of the CPU. The casing is a NZXT H9 Flow with the 360 radiator at the top and fans blowing out. The rear fan blows out and the bottom 3 and side 3 blow in.

Despite setting all the fans to run at 100% including the pump and radiator fans, you can see the large difference between coolant and CPU temp. I am worried I didn't install the pump properly or does anyone here have any tips to improve the cooler performance?

The 95 is not the issue. My worry is the massive difference between the coolant temp and CPU temp. You can use GPU temp kinda like ambient temp in the casing

Let me answer one by one

1) The load is typically at least 1-2 hours long
2) It is mostly doing what is the equivalent to render work. Other times it's doing watershed and flooding simulations
3) that data was captured with the CPU facing a 2hp AC unit set to 25°C and the radiator is top mounted with fans blowing out

Cooler is a nzxt kraken z73. Like I said, I am well aware that the CPUs are set to run up to 95 but what I am not used to is the massive delta between the coolant temp and CPU temp. Is it normal for the temperature difference to be so large? I am worried there is a problem with the heat block/pump module that it's not sucking up and transferring heat to the water.

The CPU will slowly increase the clock speed to about 5.2 - 5.5GHz and when it reaches 95°C then the clock speeds drop to around 4.8 and then the cycle starts again. Up then down then up then down. I was hoping to slow down this cyclic behaviour by improving cooling so that it will stay at higher clock speeds longer.
At first I used the TIM that came with the AIO. Then I tried changing the mounting position by rotating it 90° so that the pipes come out from the side and not the bottom. When I did that, I switched to Cooler Master Mastergel Pro V2 as I had some left over. I am actually interested to try the PTM7950 but worried buying fake stuff. Any recomendded sources?

Thanks for the recommendations. Will buy the Kryosheet as can get in shop nearby. If not then will order the Noctua stuff later. Thanks for the recommendations