Intel Core Ultra 9 285k 'Arrow Lake' Discussion/News ("15th gen") on LGA-1851

[Rroff]

Interesting how it seems to be accepted that the ArL CPU's and boards should manage 8200Mhz, almost as a norm..? Well, at least more so than RL.

You need a good board for anything over ~7600 on RL and only the top boards do 8200 really. I don't think it has hugely moved on other than the inclusion of CUDIMMs help to hit 8000 as more of a norm on AL.

 

[RSR]

You need a good board for anything over ~7600 on RL and only the top boards do 8200 really. I don't think it has hugely moved on other than the inclusion of CUDIMMs help to hit 8000 as more of a norm on AL.

8800/9000 is about the top end on RKL, but it depends on the board and CPU. As you need something like an Apex or Asrock Lighting a 1DPC board as the 2DPC boards like the hero top out around 7600/7800. My KS will do 8800 on the Apex Encore

CUDIMMs are quite impressive, as it's more like DDR5.5 as they are a lot more stable higher up the M/T window. I'm still waiting on the Supercool Heatsinks to arrive before setting up the Apex, as depending on certain settings, it gets very upset (flips bits) the warmer it gets.

 

[Rroff]

8800/9000 is about the top end on RKL, but it depends on the board and CPU. As you need something like an Apex or Asrock Lighting a 1DPC board as the 2DPC boards like the hero top out around 7600/7800. My KS will do 8800 on the Apex Encore

CUDIMMs are quite impressive, as it's more like DDR5.5 as they are a lot more stable higher up the M/T window. I'm still waiting on the Supercool Heatsinks to arrive before setting up the Apex, as depending on certain settings, it gets very upset (flips bits) the warmer it gets.

My Z790 Aorus Master will do well over 8000 but not worth it with the 14700K, the gains aren't really noticeable outside of benchmarks.

 

[RSR]

My Z790 Aorus Master will do well over 8000 but not worth it with the 14700K, the gains aren't really noticeable outside of benchmarks.

That's the thing, these boards advertise they can do xyz, but then when you test them, they fall short. Take the Z790 Hero for example as I have first-hand experience with that board as going off the Asus site, it can do 7800+, but in real-world testing, 7600 is where it was stable 7800 would boot but throw errors, and 8000 wouldn't boot. I normally work off the rule of thumb with 2DPC boards working down 2 bins from what they advertise. However, that said, I see some of those Gigabyte boards say they can reach 8200+ on a 2DPC boards see here for an example https://www.gigabyte.com/Motherboard/Z790-AORUS-PRO-X/sp#sp but I know for a fact that board does not post at 8200 as I tested a G.Skill 8200 48GB kit on it.

It does help in the 1% lows and games which use bandwidth over latency. However, your average user would probably notice tbh.

 

[Rroff]

That's the thing, these boards advertise they can do xyz, but then when you test them, they fall short. Take the Z790 Hero for example as I have first-hand experience with that board as going off the Asus site, it can do 7800+, but in real-world testing, 7600 is where it was stable 7800 would boot but throw errors, and 8000 wouldn't boot. I normally work off the rule of thumb with 2DPC boards working down 2 bins from what they advertise. However, that said, I see some of those Gigabyte boards say they can reach 8200+ on a 2DPC boards see here for an example https://www.gigabyte.com/Motherboard/Z790-AORUS-PRO-X/sp#sp but I know for a fact that board does not post at 8200 as I tested a G.Skill 8200 48GB kit on it.

It does help in the 1% lows and games which use bandwidth over latency. However, your average user would probably notice tbh.

I've not had much luck with G.Skills on Z790 boards, had much better results personally with Kingston.

EDIT: Though I'm a little wary of higher memory speeds on RL as those with degradation on 14900s usually seem to be with faster than 6600 while those around 6000-6200 rarely seem to encounter it.

 

[RSR]

EDIT: Though I'm a little wary of higher memory speeds on RL as those with degradation on 14900s usually seem to be with faster than 6600 while those around 6000-6200 rarely seem to encounter it.

That's due to the VID and how the board extrapolated it with boosting, and the later MC's have addressed that by putting a lower limit in place and tweaked other behaviours. My early KS still runs 8600C36 daily without any fuss, that said it is delidded and it's a pretty strong SP 112.

 

[hlennie]

You need a good board for anything over ~7600 on RL and only the top boards do 8200 really. I don't think it has hugely moved on other than the inclusion of CUDIMMs help to hit 8000 as more of a norm on AL.

My cudimm 8200 will do 8600. My normal 7200 kit that overclockers sell will do 8000 on a asus strix gaming A. Swapping out to a hero next weekend

 

[hlennie]

Finished my stress testing and benchmarking of the system today.
Cinebench 2024 temperatures were 70C while running multi core.

Cinebench 2024 scores were down a little on multi core and GPU, but not by much.

This is with a totally stock system, so there is some room for improvement.

Once you up the clocks and tweak the memory those cinebench scores will jump use the intel xtu utility to diall in the settings then set them in bios. E cores i found will easily do 50 on all but 51 totally crash. One group of four may do 51. But as im moving to hero board and a 285k I have stopped tweaking.

What have you got the memory now set at?

 

[hlennie]

8800/9000 is about the top end on RKL, but it depends on the board and CPU. As you need something like an Apex or Asrock Lighting a 1DPC board as the 2DPC boards like the hero top out around 7600/7800. My KS will do 8800 on the Apex Encore

CUDIMMs are quite impressive, as it's more like DDR5.5 as they are a lot more stable higher up the M/T window. I'm still waiting on the Supercool Heatsinks to arrive before setting up the Apex, as depending on certain settings, it gets very upset (flips bits) the warmer it gets.

Nope pretty sure some on another forum has hit 11000

 

[RSR]

Once you up the clocks and tweak the memory those cinebench scores will jump use the intel xtu utility to diall in the settings then set them in bios. E cores i found will easily do 50 on all but 51 totally crash. One group of four may do 51. But as im moving to hero board and a 285k I have stopped tweaking.

What have you got the memory now set at?

You normally need to define VF points when running the E cores over 50, as I have had mine running at 53. However, it does also depend on the bin of the CPU, as it has quite a few SP numbers now.

 

[RSR]

Nope pretty sure some on another forum has hit 11000

You have quoted my comments for Raptor Lake CPUs; on a usable daily configuration, you won't find much stability over 8800 with it.

Arrow Lake, I have had 10K running on my Apex, but hitting higher normally requires running on a single stick and, for the top-end numbers LN2.

 

[hlennie]

You normally need to define VF points when running the E cores over 50, as I have had mine running at 53. However, it does also depend on the bin of the CPU, as it has quite a few SP numbers now.

Thats good to know. Ill have a play with those vf curves once I do the rebuild. What voltage was u running the e cores? Also did you have to drop the clocks on the p cores?

 

[hlennie]

You have quoted my comments for Raptor Lake CPUs; on a usable daily configuration, you won't find much stability over 8800 with it.

Arrow Lake, I have had 10K running on my Apex, but hitting higher normally requires running on a single stick and, for the top-end numbers LN2.

My bad I misread. Apex boards are really something but a bit rich for me. Only jumping to the hero as my sons haveing my 265k and board and I got the hero super cheap

 

[RSR]

Thats good to know. Ill have a play with those vf curves once I do the rebuild. What voltage was u running the e cores? Also did you have to drop the clocks on the p cores?

It was around 1.350 if I remember correctly, nope they are fairly happy at 57.33 as they have different VF curves.

I've posted this before, but it's worth a watch. My CPU has better E cores, as my VIDs are lower, so my values are lower than Skatter bencher, but P Cores are about the same as mines a similar SP no.

 

[LawshadowZ]

Hi,

So i finally joined the Arrow Lake army...pulled the trigger actually 2 weeks ago had to wait for all my hardware to arrive.
Anyway my specs:

Intel 285k
Asrock Z890i Nova wifi itx
G.Skill CUDIMM 8800mhz kit (mb QVL listed)
XFX 9070 XT Mercury Magnetic Air oc gpu
Corsair SF1000 psu
2 x Samsung 990 Pro 1tb
Lian Li A3 matx case
Thermal Grizzly contact frame for LGA1851
Thermal Grizzly Kryosheet (fed up with pump out nonsense!)

Cooling:
Aquacomputer Kryos Cuplex Next Vision full copper cpu block
Aquacomputer Airplex Modularity System 480 rad
EKWB CSQ X-res D5 top
Alphacool VPP D5
EKWB ZMT "3/4 OD tubing
Bitspower brass barbs
Koolance clamps for "3/4 od
4 x Phanteks T-30 fans @ Hybrid speed 1200rpm
2 pairs of Koolance QDC4
Koolance 702 clear coolant

But look at this according to BIOS i have a SP rating of 101....did i just won the silicon lottery? Most get 70 to 95...pic:

Everything posted fine thank god! But with a catch i couldn't update the BIOS ive tried 4 USB drives all FAT32 etc none worked yet BIOS recognized all USB drives....What i did was actually meant for BIOS flashback button i renamed the BIOS file to "CREATIVE.ROM" this would work on BIOS flashback button on mb but NOT via the classic way inside the BIOS!! Just do NOT rename the file after extracting, lesson learned after 1.5 hours of wasted time.

Done some testing (all default) PL1-250w - PL2-250w max = 73c

Are these temps hopefully good for custom watercooling?

Want to do a mild OC on cpu nothing to massive and hope you guys can help me out like i said nothing to fancy ie oc NGU - D2D - and other performance tweaks incl my rated speed on my 8800mhz CUDIMM kit if xmp is unstable that is...

 

[Rroff]

That's due to the VID and how the board extrapolated it with boosting, and the later MC's have addressed that by putting a lower limit in place and tweaked other behaviours. My early KS still runs 8600C36 daily without any fuss, that said it is delidded and it's a pretty strong SP 112.

Not to fill this thread with RL stuff but I'm aware of the technical side of the issues but out of those I've seen who've definitely had these issues it seems more common to happen on setups with very fast RAM - possibly it increases the stress in some way/extra heat from memory controller or whatever and exacerbates the problem.

 

[Shaolin Chicken]

Once you up the clocks and tweak the memory those cinebench scores will jump use the intel xtu utility to diall in the settings then set them in bios. E cores i found will easily do 50 on all but 51 totally crash. One group of four may do 51. But as im moving to hero board and a 285k I have stopped tweaking.

What have you got the memory now set at?

Hi hlennie, got the memory at 8200 default timings, happy with that for now.
Will mess around the things when I have a bit more time, got a memory overclocking guide from OCN toread.

The settings you gave me wouldn't post

 

[Vimes]

@LawshadowZ Congrats, looks really nice. You must be well pleased.

It isn't really an army to describe the ArL owners, more of a platoon, perhaps just above that of a mob (j/k)

 

[hlennie]

Hi hlennie, got the memory at 8200 default timings, happy with that for now.
Will mess around the things when I have a bit more time, got a memory overclocking guide from OCN toread.

The settings you gave me wouldn't post

Forgot to mention those upper settings I was only able to reach by upping the speed reboot retrain boot cycles until i got to 8800 then ran dim fit. Wont just get there from dialling in speeds. Im hopeing the 285 and the hero will let me clock better. Find out this weekend I hope as Im doing two watercooled builds my sons and mine