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orcinus · ‎05-14-2016

So, I've been trying to run this RAM kit and it seems impossible - F4-2800C15Q2-128GRKD simply won't boot on XMP. Also, the strap it automatically sets up feels quite high, 127.3 for 15-15-15-36 2800 setup. Not sure where the exact problem lies? What is this RAM kit supposed to run at with maybe 100 strap? Will strap of 100 make it easier to setup?
What could be good settings to start setting it up manually?

So far it works if I loose timing a bit and set to 2600 - 100 strap/blck, 2600, Sys agent 1.15, DRAM volt 1.35 and 16-16-16-38 works. (CPU 44x 1.32V)...

cekim · ‎05-14-2016

As you may find on various posts here, XMP + X99 on R5E (actually most X99 that I've seen), is a cruel joke. Sadly, you should not expect it to work, that's normal.

1. you will need to double check that all your dram timing settings were actually applied
2. 128G makes things harder. I can take 64G of my 128G CAS 14 kit and run it at 3200 CAS 14, but (as 128G) it won't boot at all at its marked 3000 CAS 14
3. cache voltage seems to interact with the IMC stability, so try adding some offset there as well. You didn't mention cache frequency or voltage...
4. 1.32 for 4.4GHz is on the high-side of normal, but still normal, do make sure you need that much there? (I assume you have already)
5. 1.15 SA may be too low with 128G, but SA is very, very touchy and a pain to test
6. If all else fails:
a. try changing the 100:100 vs 100:133 dram option, to get 2666 - this chip seems to like that speed
b. try dropping your timing - 14-14-14-35 or 34 (or perhaps even lower), you may be able to get overall performance equal or better than 2800@15
c. add some more voltage too with that if it doesn't work at 1.35, try 1.36 or 1.37. I haven't seen much in the way of temp increase doing that with the ram, but your mileage may vary.
.

The_Veterant · ‎05-14-2016

orcinus wrote:
So, I've been trying to run this RAM kit and it seems impossible - F4-2800C15Q2-128GRKD simply won't boot on XMP. Also, the strap it automatically sets up feels quite high, 127.3 for 15-15-15-36 2800 setup. Not sure where the exact problem lies? What is this RAM kit supposed to run at with maybe 100 strap? Will strap of 100 make it easier to setup?
What could be good settings to start setting it up manually?

So far it works if I loose timing a bit and set to 2600 - 100 strap/blck, 2600, Sys agent 1.15, DRAM volt 1.35 and 16-16-16-38 works. (CPU 44x 1.32V)...

Hey guy try manual tweaking , don't use XMP, another advice don't use 2800Mhz speed you can get better performance using 2666Mhz speed advice from experience I own a kit. The manual tweaking that I do on mine is Speed: 2666Mhz, strap:100, timing: 15,15,15,35,2t , eventual voltage: 1.360v, Boot voltage 1.410v try that and adjust if need it, and you will be GOLDEN.

"I'm not an OCer just looking a good MENTOR". UyqtCojoXecQlo.". 😄

cekim · ‎05-14-2016

The Veterant wrote:
Hey guy try manual tweaking , don't use XMP, another advice don't use 2800Mhz speed you can get better performance using 2666Mhz speed advice from experience I own a kit. The manual tweaking that I do on mine is Speed: 2666Mhz, strap:100, timing: 15,15,15,35,2t , eventual voltage: 1.360v, Boot voltage 1.410v try that and adjust if need it, and you will be GOLDEN.

Regarding boot voltage, I should have mentioned that. I've seen a few patterns myself with that.

As Veterant says, you may want to give it a little more at boot than the "eventual voltage" you see in the DRAM timings page (at the bottom).

On 1.35v chips, I frequently end up with 1.37 on the first page and 1.35 on the "eventual voltage". I've been told I shouldn't need to do that, but every experiment I've done without it has led to erratic and sometimes scary voltages showing up. So, nope... They both get set for me.

Also, on 1.4v, as discussed in the sticky, more isn't always better with DDR voltages... Don't be surprised if you see that neither 1.4 nor 1.35 work, but 1.37 does. I've seen just that on several kits.

orcinus · ‎05-15-2016

Thanks guys. Regarding 5960X voltage, yes I'm running Cinebench R15 with success even on 1.25V so no, 1.32 is not needed for 44. 🙂
Loosened timings work atm, but not sure where to go from here. Sys voltage is 1.15V and it seems super-stable. CPU is (100% load Cinebench) at 40°C idle (minimum fans) and 65°C full load at near-silent 1200 RPM (H115i).
The case has zero airflow so that's fine. 🙂

Now, the memory... 2600 ATM 1.35V works fine...

Oh and for some reason, adaptive clock and voltage don't work. It's rock solid at 44, 1.25V and 4.4GHz.

cekim · ‎05-16-2016

orcinus, an update after a big part swap for me just a reference for you. I moved my 128G 3000 CAS14 kit and the corresponding 5960x to my R5E (previously on an X99 Pro). This is the first time I've seen a difference between the PRO and R5E (and R5E is running better).

However, while it booted/ran with 3000-XMP@125 strap right out of the box, it would not boot with 100BCLK. I made the following changes to get it to run at 100 BCLK, 3000 CAS14 (all 128G):

SA: offset +0.220
Cache: offset +0.200 (4.2GHz)
LLC = 5
DRAM Current capability 140%
DRAM Eventual Voltage = 1.35 (marked voltage on chip)
DRAM Voltage: Auto (and it frequently ramped it to 1.4 with eveyrthing on Auto).

Any one of those may or may not have been required, but the iterations I did do were:
1. SA = Auto + Cache Auto:
- hang on boot at dram init
2. SA = +0.22 and no other changes:
- 96G recognized (2 dimms missing)

With all of the changes (which represent my typical setup on X99 PRO), it runs without issue.

orcinus · ‎05-17-2016

cekim wrote:
orcinus, an update after a big part swap for me just a reference for you. I moved my 128G 3000 CAS14 kit and the corresponding 5960x to my R5E (previously on an X99 Pro). This is the first time I've seen a difference between the PRO and R5E (and R5E is running better).

However, while it booted/ran with 3000-XMP@125 strap right out of the box, it would not boot with 100BCLK. I made the following changes to get it to run at 100 BCLK, 3000 CAS14 (all 128G):

SA: offset +0.220
Cache: offset +0.200 (4.2GHz)
LLC = 5
DRAM Current capability 140%
DRAM Eventual Voltage = 1.35 (marked voltage on chip)
DRAM Voltage: Auto (and it frequently ramped it to 1.4 with eveyrthing on Auto).

Any one of those may or may not have been required, but the iterations I did do were:
1. SA = Auto + Cache Auto:
- hang on boot at dram init
2. SA = +0.22 and no other changes:
- 96G recognized (2 dimms missing)

With all of the changes (which represent my typical setup on X99 PRO), it runs without issue.

Have you kept ability to actually downclock and downvolt according to usage? I've lost that in the process...

cekim · ‎05-17-2016

orcinus wrote:
Have you kept ability to actually downclock and downvolt according to usage? I've lost that in the process...

On the CPU? Yes, definitely, at 100BCLK.

On the RAM? Don't know, more often than not, I am running linux, so I can't monitor that as easily as I can in windows.

When I was benchmarking this system in windows, I definitely saw (aida64) voltage dropping as it should under low load. Same with frequency. I didn't check to see if the ram interface did the same.

Running linux, sorry my machine is a little busy right now as you can see, but you can also see speed-step is doing its thing just fine:

cpu MHz : 4657.382
cpu MHz : 3091.875
cpu MHz : 4701.445
cpu MHz : 2323.125
cpu MHz : 4662.187
cpu MHz : 4699.921
cpu MHz : 4687.734
cpu MHz : 1785.703
cpu MHz : 3489.843
cpu MHz : 3239.179
cpu MHz : 4528.476
cpu MHz : 1837.148
cpu MHz : 3819.257
cpu MHz : 4507.382
cpu MHz : 4699.921
cpu MHz : 3211.054

The_Veterant · ‎05-17-2016

This is what should get at 2400Mhz w/ this kit, I did try ones the XMP setting manually but the scores were worst to what I just show you. This shines at 2666Mhz w/ 100 strap for me I'm more then happy w/ this scores. Lantency got a little high w/ this bios version 3101 but, I had to update to be able to use my XEON w/ the board as well. With the 102BLCK and 100 strap all scores are pretty much event all across.

"I'm not an OCer just looking a good MENTOR". UyqtCojoXecQlo.". 😄

Running F4-2800C15Q2-128GRKD on default XMP - no go?