I do not think they are going to drop anytime soon due to the 9800X3D availability being so very poor.
These where £315 in June before they started slowly going back up
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Poll: Ryzen 7950X3D, 7900X3D, 7800X3D
- Thread starter kindai
- Start date
These where £315 in June before they started slowly going back up
Soldato
7800x3d is performing fantastically so far
Have it set to PBO -20 and the 64gb Kingston (Hynix) 6000 CL30 EXPO setting
Seems to be able to sustain just over 5ghz with a r23 score of 18,700
Not too burst your bubble, but have you tested those curves, im just coming towards the end of my testing, should be finished by Tuesday morning, but this is how mine ended up, some are not bothered, but id rather live without data corruption and random crashing, that negative 3 is the best core on that CCD, every ryzen CPU has it, and basically its considered as so tuned from AMD that they basically will do next to no curve, currently I boost to 5.9ghz on my frequency cores which im over the moon with.
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Soldato
The quick easy way is set them all to -10 in the bios except your 2 best cores, set those to 0, get hold of Ryzen SDT debug tool which allows for changing curves in windows, also get hold of ryzen master just to find out what you best core and 2nd best core is, to start with I ran AIDA64 SHA3 benchmark, just select 1 core in the options, it will test the first core, takes about 5 seconds to test it, you need to click that start button at least 20 times to 30 times, if it passes, set the curve for that core to -15 in ryzen SDT tools and apply and try again, keep going until it crashes, then you know roughly what that core can do, whilst the PC is rebooting, enter that figure into the bios for that core, once your back in windows start working on the 2nd core, leave the 2 best cores till last, but then work on your 2nd best core before the best core.
I then run core cycler, I set the configure file up to run Y-Cruncher-Old 00-x86, 3 mins per core and let that run for 10 passes, if you get any crashes then you can look in event viewer, core cycler now logs easy to check events, and see exactly which core crashed, then fine tune it, test again.
For final tests ive run loads, but ive yet to have any problem, you can probably leave it there, for me ive run Prime95 Small FFTs AVX2. AVX512 and SSE for 10 hours each, Y-Cruncher full suite for 10 hours and yet to run is OCCT stability certificate for however long it takes to run and prime95 blend, so i'll run one during the day whilst im at work tomorrow and one overnight tomorrow night.
I kind of follow skatternech's guide for curves, but I substitute whatever that shimano's tool is which I cant find for ADIA64 SHA3 test to find initial curves, he does steps of -5 where as I do steps of -2, just depends how much you want to fine tune it.
I only really run the Y-Cruncher full suite component tester and OCCT as im RAM and FCLK overclocking too.
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I'm about to update my Motherboard Bios, and figured I may as well do an 'easy touch' bit of tuning to extract some more from my 7800X3D.
I can see quite a bit of conflicting detail - what is the idiots guide that gets me 80% of the way there without spending days tuning for minimal extra improvement please?
Edit - setting BAR Support On, PBO, -20 all cores and EXPOII using the latest bios, I've got:
Cinebench R23:
- Single Core 1744
- Multi Core 18057
3DMark Timespy:
- 20638 Total
- 22855 Graphics
- 13318 CPU
I can see quite a bit of conflicting detail - what is the idiots guide that gets me 80% of the way there without spending days tuning for minimal extra improvement please?
Edit - setting BAR Support On, PBO, -20 all cores and EXPOII using the latest bios, I've got:
Cinebench R23:
- Single Core 1744
- Multi Core 18057
3DMark Timespy:
- 20638 Total
- 22855 Graphics
- 13318 CPU
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I was going to wait for 9800X3D to come into stock but given the 7800X3D is not that far behind I found grabbing that from MM with warranty at £300 was a no brainer and atleast the below gives me a solid base for years to come.
Coming from:
5700X3D
ROG Strix X-570F
32GB Corsair Vengeance RGB Pro DDR4 3600
Samsung Evo 1TB SSD
Upgrading to:
AMD 7800X3D
MSI MAG X870 Tomahawk
32GB Corsair DDR5 Vengeance RGB -6000/CL30
Samsung 990 Pro 2TB SSD
CPU Cooler is a H150i Elite Capellix XT and PSU HX1000i
GPU is currently a RTX3080 which I'm going to upgrade to a 5080 hopefully and will offload the current mobo/cpu/ram on MM over the weekend to offset the cost.
Coming from:
5700X3D
ROG Strix X-570F
32GB Corsair Vengeance RGB Pro DDR4 3600
Samsung Evo 1TB SSD
Upgrading to:
AMD 7800X3D
MSI MAG X870 Tomahawk
32GB Corsair DDR5 Vengeance RGB -6000/CL30
Samsung 990 Pro 2TB SSD
CPU Cooler is a H150i Elite Capellix XT and PSU HX1000i
GPU is currently a RTX3080 which I'm going to upgrade to a 5080 hopefully and will offload the current mobo/cpu/ram on MM over the weekend to offset the cost.
now I've got PBO settings pretty dialed in (for now) - I was wondering where best to tackle quite poor AIDA64 memory latency scores please ?
from research it seems to be memory timings that are probably too loose (even in EXPO)
I did 2 memory latency runs and results were 80ns and 79ns which seems pretty poor for DDR-6000 CAS30 - EXPO. Kingston RAM I'm pretty sure is A-Die
I was just wondering if anything else I should be tweaking before memory timings.
The only other non stock setting is I've dropped VSOC from the default EXPO 1.305 down to 1.25V (I will try 1.20V next)
reading online seems to suggest whilst attempting to increase FCLK to 2033 or 2133 in past has yielded good results with latest bios's 2000 is recommended ?
the 7800x3D seems to be running pretty cool which I'm pleased with (Peerless Assassin) - after 3 hours of smallest (or small) Prime95 it was at 61C and in cinebench hits about 73C max. I ran Prime95 on my son's 5800x3d (AIO cooled) and it hit 90C within 5 minutes !
many thanks for any suggestions
from research it seems to be memory timings that are probably too loose (even in EXPO)
I did 2 memory latency runs and results were 80ns and 79ns which seems pretty poor for DDR-6000 CAS30 - EXPO. Kingston RAM I'm pretty sure is A-Die
I was just wondering if anything else I should be tweaking before memory timings.
The only other non stock setting is I've dropped VSOC from the default EXPO 1.305 down to 1.25V (I will try 1.20V next)
reading online seems to suggest whilst attempting to increase FCLK to 2033 or 2133 in past has yielded good results with latest bios's 2000 is recommended ?
the 7800x3D seems to be running pretty cool which I'm pleased with (Peerless Assassin) - after 3 hours of smallest (or small) Prime95 it was at 61C and in cinebench hits about 73C max. I ran Prime95 on my son's 5800x3d (AIO cooled) and it hit 90C within 5 minutes !
many thanks for any suggestions
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Spent most of the day today putting the 7800X3D build together and hardware wise all ran well with no hiccups at all, booted on first try, RAM profile set to EXPO with no issues, CPU is idling at 32-34c and didn't exceed 70c in albeit my limited testing so far.
Really enjoyed building on the MSI X870, love the quick release on the PCI-E slot and the quick release system on the nvme slots.
A few issues with Windows 11 install but that was stupidity on my part and having a brainfreeze (I forgot to remove the usb stick after the first restart and was sat there for a good 5 minutes trying to figure out why it kept going back to step 1 of the install, doh!)
Only thing left now are some case fans coming tomorrow and then wait for 5080/5090 launch to check what body parts I need to sell.
Soldato
The only way to get that latency down is to tighten those timings up, EXPO and XMP has very needlessly lose timings, buildzoids easy DDR5 timings would be a good place to start which should bring your latency down quite a bit, just know that although he set tRFC to 500, 400 and 300, tRFC2 and tRFCsb are not used by AMD so they can simply be set to 1, thats 2 less timings to worry about.
Some of the info in that video is out of date though, so be careful, the FCLK 2033 thing was fixed and is no longer the fastest FCLK setting, also SOC voltage is not safe upto 1.4v, 1.3v is the absolute max.
If you want to skip most of the babble then jump to 4mins 15 to just get on with it:
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thankyou will try that tomorrow
so far seems ok (in initial tests - still testing) at VSOC @ 1.20v and FCLK @ 2133
Tried those settings but whilst initially seemed stable I got to point where no bios settings would save and bios got completely confused. Windows wouldn't post either
I tried changing all memory settingss back to auto but whilst did show had saved you could see in the bios the original tweaked settings not the original auto ones so something very amiss
Had to do a clear CMOS (with a screwdriver as it's a jumper on my board and don't have one) but of a faff
Latency was down to 68ns so quitw a bit better unfortunately I don't know which setting it didn't like
My memory although Hynix A is 2x32gb so maybe that makes a difference as not single sided
Soldato
If you want to try again, try SCL's at 5 instead of 4, but are you sure its A die if its 64gb, normally thats M Die if it really is Hynix based, but regardless, those settings should still work, which brand of ram is it ?