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AMD DDR5 OC And 24/7 Daily Memory Stability Thread

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#14,002 ·
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#14,003 ·
Kaliz said:
placed my G.Skill 7200 Z5 RGB kit in the toaster yesterday :D . idle temp with fan blowing right at them was 28,7 (delta T 10C with airtemp) now they are sub 20C and delta T is minimal. And the ridiculous RGB is almost gone now :D those LEDS are extremely bright too View attachment 2646814
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My kit is 48GB 8000 Z5. With Bartx Cu heatsinks and Bykski RAM-X2 block, they idle at about 25 and during Karhu, get up to 27C @ 1.5V. I don’t think they even got to 28 at 1.6V.
It’s the 7900XTX in same loop that heats them to 30 during gaming/benching. Those are at rt around 20C
 
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#14,004 ·
Taraquin said:
Is the ram 24gb M-die? How are they timingswise vs 16gb A-die?
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im not sure yet, just got this 24gb kit! its M-die from week 1 , 2024, seems really good for clockspeed but timings are a bit loose. Im now pretty much stable at 8800C42, on the iGPU it needs to be completely stable one tick RAS wrong and you get glitching etc. really nice stuff btw i recommend it, it arolund 180 euro for 48GB fresh Hynix M-die with 10ns latency factory XMP timings.
 
#14,005 ·
rushi said:
My kit is 48GB 8000 Z5. With Bartx Cu heatsinks and Bykski RAM-X2 block, they idle at about 25 and during Karhu, get up to 27C @ 1.5V. I don’t think they even got to 28 at 1.6V.
It’s the 7900XTX in same loop that heats them to 30 during gaming/benching. Those are at rt around 20C

View attachment 2646826
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after 2 hours playng BF2042 (at 1440p with HYPR-RX enabled 88 fps) on the iGPU , RAM is max 33C, average 29C with air. In TM5 its a bit warmer but nothing over 40C as was standard before, at around 45C they would error out, specially when gaming on the iGPU 8700G
 
#14,006 ·
Taraquin said:
Remeber that imc is not all ;) My crappy imc is somewhat balanced by golden cores running -45 avg if I want it sse-stable or -41 avg if I want it to pass the infamous occt avx2 heavy-test. Fclk is average. After 1.1.0.2b-agesa 2167 fclk might work. 2200 was very unstable at 1.1.0.0, but now is 100% stable, but a bit slower probably due to errorcorrection. Got 68700 read in aida and 60.5ns vs 67600 read with 2133 and 58.6ns so it actually scales above 2133. 2167 was 10% slower than 2133 in y-cruncher with 1.1.0.0, excited about testing it now :)
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I know, I am gonna keep that in mind. My SP rating is quite decent as is frequency potential on non 3D cache with this first chip. So I'll probably try a bit of CPU tweaking with this RAM profile on both chips.

I would probably take a much better CPU on frequency side rather than a bump to 6400. Could just hold out for another golden AGESA update to help with memory frequencies. CPU isn't going to magically get better with an AGESA update bin wise.
 
#14,007 ·
Kaliz said:
You could pair the HDV maybe with a cheaper 8000G series CPU for your ' its over 9000; setup :D
now im really wondering if you can set 100 bclk and the 82 multiplier for 8200 on the 7950X3D and Master?
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8400 via 84x 100 w/FCLK2200 would be yummy ...a no-go so far, but haven't tried with the latest AGESA / Bios
 
#14,008 ·
Audioboxer said:
I know, I am gonna keep that in mind. My SP rating is quite decent as is frequency potential on non 3D cache with this first chip. So I'll probably try a bit of CPU tweaking with this RAM profile on both chips.

I would probably take a much better CPU on frequency side rather than a bump to 6400. Could just hold out for another golden AGESA update to help with memory frequencies. CPU isn't going to magically get better with an AGESA update bin wise.
Click to expand...
From my AM4-days it seemed no agesa/bios changed how cores behaved woth CO, but ram-support, soc requirements etc changed quite a bit. Seems like it is so on AM5 aswell.
 
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#14,009 ·
Well, looks like I'm going for the beta bios as well then on the HDV and I'll see if I can then run 8160 RAM clocks! I now run 102 BCLK at 7800 divider (7956 effective) as it would POST with 8160 but wasn't stable enough to boot windows before.

8160c34-46(or 47 if it doesn't like 46 tRCD)-40-40-80-496-1T with 2210 FCLK and 5150 all core on CPU should run pretty nicely if I can get it to do it.

Offtopic: playing with my i5 750 with some new ram now. I used to have 4x2gb ocz gold in there but I needed 16gb so I slapped some 4x4gb OEM Lenovo workstation RamAxel 1600C11 @ 1.350v ddr3 DIMMs in it and it seems to really love those. With 200 fsb at 1200c9 1.650v they run fine in tm5 and such. I am now running 1600 9-11-10-24 which needs a LOT of voltage (1.740) but they seem to run fine so far. 1.700 gave error 6 in tm5 pretty quick but 1.740 has ran for 20 minutes so far. I can push ddr3 pretty high. Not afraid of 1.90v+ tbh. The DIMM's are literally free so.. I got plenty more if I blow these up... Hehe.
 
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#14,011 ·
Kaliz said:
idle temp with fan blowing right at them was 28,7 (delta T 10C with airtemp) now they are sub 20C and delta T is minimal.
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That's a good one. (y)
What's the name of this heatsink? :)



And the rest of you guys, anybody else can recommend a good air-cooled heatsink?
 
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#14,012 ·
Kaliz said:
m now pretty much stable at 8800C42,
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That 8800 (FCLK 2200 x4) is very interesting. The 8800 combined with 2200 FCLK would probably have the best performance for 24/7 overclock.

It would be interesting to see some 8800/2200 benching results.
 
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#14,015 · (Edited)
J7SC said:
no doubt that the ASRock B650M-HDV/M.2 2-dimm board is a true gem - and amazingly affordable for an 8-layer board
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It's a 6 layer board.

Taraquin said:
Got 68700 read in aida and 60.5ns vs 67600 read with 2133 and 58.6ns so it actually scales above 2133. 2167 was 10% slower than 2133 in y-cruncher with 1.1.0.0, excited about testing it now :)
Click to expand...
It's pretty much what I get (68500 67700 Read and copy, 93000 write, 58.5ns) at 6000 and 2133 on 2.02 version of the bios. I'm still thinking if I want to go with the new beta because trying to figure out if fclk is actually stable was a pain.

Edit: Got generous with that 68500, sorry :p
 
#14,016 · (Edited)
Melan said:
It's a 6 layer board.


It's pretty much what I get (68500 Read and copy, 93000 write, 58.5ns) at 6000 and 2133 on 2.02 version of the bios. I'm still thinking if I want to go with the new beta because trying to figure out if fclk is actually stable was a pain.
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Tested today. Fclk 2167 is 2% slower in aida and 1% in linpack, a big improvement vs 10% performanceloss, but 2133 still wins. Soc-requirement of ram oc seems to have dropped by 30mv.

On my setup I got clear performanceregression at lower than unstable.

2.02: 2133 stable, 2167 stable but -10%, 2200 unstable, sudden reboot, 20-30% lower performance
2.08beta: 2167 stable but 1-2% slower, 2200 stable but 10% slower.
 
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#14,017 ·
Sam_Oslo said:
That's a good one. (y)
What's the name of this heatsink? :)



And the rest of you guys, anybody else can recommend a good air-cooled heatsink?
Click to expand...
freezemod, i cant really recommend them but they are cheaper then the 45 euro per piece icemancooler and the likes. I think it was like 25 euro for 2 aluminium heatsinks including screws and thermal material.

they are the same as the Bykski ones i see now
 
#14,018 ·
J7SC said:
...May be my troubles with the delivery of the Teamgroup 8200 from Amazon was for the better (allegedly 'damaged' right before the final leg of the delivery after initially claiming a severe weather event - the centre is 20 min from here - for the sudden 8 day delay).

After that I cancelled and instead ordered the one below from another retailer, saving serious bucks in the process. Besides, I already have a GSkill 2x 24 GB TZ5RK kit so down the line, I could use both kits in tandem (w/lower base timings) for a 96 GB productivity build.

View attachment 2646076
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nice .... looks a serious one, the only thing that stress me out switching from 32 to 48 is the extra testing time lol
 
#14,019 ·
Melan said:
It's a 6 layer board.


It's pretty much what I get (68500 67700 Read and copy, 93000 write, 58.5ns) at 6000 and 2133 on 2.02 version of the bios. I'm still thinking if I want to go with the new beta because trying to figure out if fclk is actually stable was a pain.

Edit: Got generous with that 68500, sorry :p
Click to expand...
Yeah, my bad...that ASRock is 6-layer mobo...I misread one review where it stated it was as good an oc-clocker as some 8-layer boards. Makes one wonder though what an ASRock 8-layer design would have yielded in terms of RAM oc

Al75 said:
nice .... looks a serious one, the only thing that stress me out switching from 32 to 48 is the extra testing time lol
Click to expand...
...still tiptoeing about with that new GSKill, starting to gingerly lower tRFC. I think Hardwareluxx has a DDR5 look-up table with some tRFC values; got to find that again...

The latest timings and voltages (some lower primaries, slightly lower tRFC), with more to come before longer stress-testing.

Image
 
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