*** AMD "Zen 4" thread (inc AM5/APU discussion) ***

[g67575]

I've built my 7700X + ASRock B650 PG Lightning system, boots fine into Windows 11 all files and programs on this SSD still there

I updated the drivers with ASRock's auto driver tool, then downloaded the latest Win updates. Disabled fTPM then updated to latest BIOS firmware.

I've tested running my 2x16GB RAM at DDR 6000 MT/s, CAS Latency 28 1.4v for memory voltages and memtest x86+ passed several times.

I would advise not lowering CL below 28, will likely make your system unbootable without clearing the CMOS. DDR5 set to 6600 MT/s also has the same effect.

I would guess that for CAS latency, motherboards need to support specific ICs (e.g. Samsung, Hynix, Micron) to be able to set CL and other memory timings lower. No DDR5 modules are sold with CL lower than 28 atm...

Running DDR5 @ 6400 MT/s maybe depends on the tier/ quality of the CPU's silicon, not sure?

I'm going to try PBO tuning for the CPU next, as expected it runs hot.

 

[Noxia]

Doing better than me. I have a motherboard, a cooler, some thermal paste and an M2 drive.

 

[Dave2150]

Looking forward to building my AM5 system. Thought we'd have seen a few leaks of Zen4 3D Cache by now - seems almost certain they'll announce it at CES?

 

[Noxia]

Looking forward to building my AM5 system. Thought we'd have seen a few leaks of Zen4 3D Cache by now - seems almost certain they'll announce it at CES?

Hope so, not really wanting that 7600X in for too long lol.

 

[theforce]

Looking forward to building my AM5 system. Thought we'd have seen a few leaks of Zen4 3D Cache by now - seems almost certain they'll announce it at CES?

I think there was an article a few days ago stating that the 3D cache models will be announced at CES.

 

[g67575]

Does anyone know if there is a 1T or 2T command rate setting for DDR5 memory, on Zen 4?

EDIT - So, according to Aida64, the command rate is set to 1t, which is generally the optimal setting.

 

[Grim5]

AMD has responded to the claims of poor gaming performance for the 7950x in windows 11 and that disabling ccx's improved performance.

Their response: We are investigating the reports but have so far been unable to replicate them

 

[g67575]

So, I tuned up my 7700X with a PBO curve editor tuning of -30 (All Core Curve Optimizer Magnitude), it's working nicely now, getting between 5.35-.5.4ghz on all cores for a 7700X with a Deepcool AK620 air cooler + MX4 thermal paste (tested under full load with CPUz).

I've set the PBO platform thermal limit to 90 C, down from the default of 95 C (this has a slight effect on the frequencies you get).

EDIT - The interesting thing is, I set the thermal limit to 70 C just to test it, and it was still getting 5.2Ghz on all cores in the CPUz benchmark (I tested this because my dad is building a similar system as well, and wanted to know if it will run well even when limited to lower temps).

The results without PBO curve editor configured weren't impressive under load (was struggling to get 5.0ghz on all cores).

 

[Vigorito]

If you have asus mobo,there is option in bios to activate PBO Enhancement in BIOS level1/level2/level3 90/80/70c and with 2 cliks i have selected level 3 70c and in gaming i have constant 5400ghz clock on 7600x sometimes goes to 5300ghz but its almost all the time 5400ghz,with average temperature 62-64 sometimes touch 71c but mostly in mid 60s,i think for most users who are are just gaming this is the best option,that curve optimizer and minus and plus then testing for me is hassle and takes a lot of time,this pbo ench. optios is great,litteraly 3 clicks

Control the temps of your AMD Ryzen 7000-series CPU with ASUS-exclusive PBO Enhancement - Edge Up

With PBO Enhancement, you can set limits for your AMD Ryzen 7000-series CPU with just a few clicks. Here's how.

edgeup.asus.com

 

[Noxia]

If you have asus mobo,there is option in bios to activate PBO Enhancement in BIOS level1/level2/level3 90/80/70c and with 2 cliks i have selected level 3 70c and in gaming i have constant 5400ghz clock on 7600x sometimes goes to 5300ghz but its almost all the time 5400ghz,with average temperature 62-64 sometimes touch 71c but mostly in mid 60s,i think for most users who are are just gaming this is the best option,that curve optimizer and minus and plus then testing for me is hassle and takes a lot of time,this pbo ench. optios is great,litteraly 3 clicks

Control the temps of your AMD Ryzen 7000-series CPU with ASUS-exclusive PBO Enhancement - Edge Up

With PBO Enhancement, you can set limits for your AMD Ryzen 7000-series CPU with just a few clicks. Here's how.

edgeup.asus.com

That's what I like! Nice and simple. I simply cannot be bothered tinkering with stuff like how I used to.

Side note, never understood why they let oyu download thigns like "chipset drivers" etc, doesn't Windows just do that for you?

 

[mattyg]

Upgrading from a broken 5950x.
Am I sane
My basket at OcUK:

• 1 x AMD Ryzen 9 7950X Sixteen Core 5.70GHz (Socket AM5) Processor - Retail (SKU: CP-3DE-AM) = £748.99
• 1 x Asus ROG Crosshair X670E Hero (Socket AM5) DDR5 ATX Motherboard (SKU: MB-6J4-AS) = £649.99
• 1 x Corsair Vengeance RGB EXPO 64GB (2X32GB) DDR5 PC5-44800C40 5600MHz Dual Channel Kit - Black (CMH64GX5M2B5600Z40K) (SKU: MY-4DQ-CS) = £399.95

Total: £1,809.43 (includes delivery: £10.50)​

​

​

​

​

Hoping thats a quick switcheroo and be back up and running again.​

 

[Noxia]

Upgrading from a broken 5950x.
Am I sane
My basket at OcUK:

• 1 x AMD Ryzen 9 7950X Sixteen Core 5.70GHz (Socket AM5) Processor - Retail (SKU: CP-3DE-AM) = £748.99
• 1 x Asus ROG Crosshair X670E Hero (Socket AM5) DDR5 ATX Motherboard (SKU: MB-6J4-AS) = £649.99
• 1 x Corsair Vengeance RGB EXPO 64GB (2X32GB) DDR5 PC5-44800C40 5600MHz Dual Channel Kit - Black (CMH64GX5M2B5600Z40K) (SKU: MY-4DQ-CS) = £399.95

Total: £1,809.43 (includes delivery: £10.50)​

​

​

​

​

Hoping thats a quick switcheroo and be back up and running again.​

Judging by RAM I am guessing you do something that actually needs that much? If just for gaming then no you aren't

 

[Dave2150]

Upgrading from a broken 5950x.
Am I sane
My basket at OcUK:

• 1 x AMD Ryzen 9 7950X Sixteen Core 5.70GHz (Socket AM5) Processor - Retail (SKU: CP-3DE-AM) = £748.99
• 1 x Asus ROG Crosshair X670E Hero (Socket AM5) DDR5 ATX Motherboard (SKU: MB-6J4-AS) = £649.99
• 1 x Corsair Vengeance RGB EXPO 64GB (2X32GB) DDR5 PC5-44800C40 5600MHz Dual Channel Kit - Black (CMH64GX5M2B5600Z40K) (SKU: MY-4DQ-CS) = £399.95

Total: £1,809.43 (includes delivery: £10.50)​

​

​

​

​

Hoping thats a quick switcheroo and be back up and running again.​

Would personally not buy a 7950X at that price, considering the 3D cache version will be so much more powerful.

I'd consider a cheap AM4 CPU to tide you over until 3d cache release, Crosshair hero probably cheaper by 7000 3d cache launch too.

 

[Minstadave]

Would personally not buy a 7950X at that price, considering the 3D cache version will be so much more powerful.

I'd consider a cheap AM4 CPU to tide you over until 3d cache release, Crosshair hero probably cheaper by 7000 3d cache launch too.

Depends a lot on his use case. Not everything is cache sensitive.

 

[mattyg]

Depends a lot on his use case. Not everything is cache sensitive.

Gaming mostly. Some photoshop
DCS and Microsoft flight sim

 

[g67575]

Is it a bad idea to force the clock rate of a Zen 4 CPU at 5500 Mhz via 'Manual CPU overclocking'?

I seem to be getting more consistent and higher CPU clock frequencies this way, with the voltage just set to 'Auto' on the manual overclocking BIOS screen.

Haven't tested stability with Prime95 yet though.

EDIT - So, the problem with running at a fixed voltage, is things like Prime95 can use a huge amount of power, and apparently any PBO thermal limits you've set will just be ignored (so temps can reach unsafe levels > 100 Celsius).

 

[CAT-THE-FIFTH]

Gaming mostly. Some photoshop
DCS and Microsoft flight sim

Flight Simulator was one of the games which showed massive gains using the Ryzen 7 5800X3D over the other Zen3 CPUs. I would definitely wait for the Zen4 X3D parts,or buy a Ryzen 7 5800X3D as I have seen a few offers for it for under £400.

Also spending £650 on a motherboard is not worth it when a motherboard under £300 would be fine.

 

[Tykey]

Flight Simulator was one of the games which showed massive gains using the Ryzen 7 5800X3D over the other Zen3 CPUs. I would definitely wait for the Zen4 X3D parts,or buy a Ryzen 7 5800X3D as I have seen a few offers for it for under £400.

Also spending £650 on a motherboard is not worth it when a motherboard under £300 would be fine.

From what I've seen the X3D only makes a real difference fps wise at lower resolutions, correct me if i'm wrong. The below graph is in VR so more like 4k res.

 

[CAT-THE-FIFTH]

From what I've seen the X3D only makes a real difference at lower resolutions, correct me if i'm wrong.

You can see it at normal resolutions:

Page 2 | Intel Core i9 13900K and Core i5 13600K review: an effective redoubt against AMD's Ryzen 7000 advances

Digital Foundry tests the Intel Core i9 13900K and Core i5 13600K, two Raptor Lake processors that offer more cores, higher clocks and winning results.

www.eurogamer.net

"The Fastest Gaming CPU in the World" - Ryzen 7 5800X3D

Get 50% off your Zoho CRM annual subscription at: https://lmg.gg/ZohoCRMCheck out the Lambda Tensorbook at https://lambdalabs.com/linusIntel got out ahead of...

www.youtube.com

Also if you look at some reviews,the 1% lows and frametime consistency is much better on the Ryzen 7 5800X3D against the Ryzen 7 5800X. In VR the difference is very noticeable:

Does the RYZEN 5800x3D improve VR performance in MSFS?

Ryzen 5800x3D▷ Amazon - https://amzn.to/3k9kJ40Twitch: twitch.tv/virtualrealitypilotTwitter: https://twitter.com/VRealityPilotInstagram: https://www.instagra...

www.youtube.com

In some games the differences are even more:

Fallout 4 CPU benchmark thread(need some Zen3 and Zen4 results!)

My brother just got a new 3060ti and was kind enough to let me throw it in my system and retest my setup with an nvidia card so im back with some new results. Corvega 11674 calls - 101.4 fps Diamond City 8045 calls - 110.5 fps Its the same setup as before only the RAM is at stock timings so...

forums.overclockers.co.uk

That is a fixed drawcall test in Fallout 4.

BTW,if someone has a Zen4 CPU,if some of you can run that Fallout 4 test I would appreciate it!

 

[Tykey]

You can see it at normal resolutions:

Page 2 | Intel Core i9 13900K and Core i5 13600K review: an effective redoubt against AMD's Ryzen 7000 advances

Digital Foundry tests the Intel Core i9 13900K and Core i5 13600K, two Raptor Lake processors that offer more cores, higher clocks and winning results.

www.eurogamer.net

"The Fastest Gaming CPU in the World" - Ryzen 7 5800X3D

Get 50% off your Zoho CRM annual subscription at: https://lmg.gg/ZohoCRMCheck out the Lambda Tensorbook at https://lambdalabs.com/linusIntel got out ahead of...

www.youtube.com

Also if you look at some reviews,the 1% lows and frametime consistency is much better on the Ryzen 7 5800X3D against the Ryzen 7 5800X. In some games the difference are even more:

Fallout 4 CPU benchmark thread(need some Zen3 and Zen4 results!)

My brother just got a new 3060ti and was kind enough to let me throw it in my system and retest my setup with an nvidia card so im back with some new results. Corvega 11674 calls - 101.4 fps Diamond City 8045 calls - 110.5 fps Its the same setup as before only the RAM is at stock timings so...

forums.overclockers.co.uk

That is a fixed drawcall test in Fallout 4.

BTW,if someone has a Zen4 CPU,if some of you can run that Fallout 4 test I would appreciate it!

So at 1080p and 1440p the X3D excels but doesn't make much difference at 4K or above, apart from the 1% lows.