2600k/MVE & 3D Benching

CF/SLI is helping in nature test only. If you make it work good then 2 gpu score can be higher than single gpu. Point is that most drivers are slower in SLI/CF and for every card it looks different so there is no rule which driver is best. In most cases nature score can be higher but some other tests will be lower so in total all depends from CPU and how high it will bump 1st tests.

btw -> 32GB Patriot Viper 2400 CL10@ 3100 , and I can only say that there is no point to push memory above 2666 on X79 boards. Higher clocks = more relaxed timings = lower performance and much higher latency.

Woomack said:

btw -> 32GB Patriot Viper 2400 CL10@ 3100 , and I can only say that there is no point to push memory above 2666 on X79 boards. Higher clocks = more relaxed timings = lower performance and much higher latency.

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Yeah...I noticed and was wondering about that. For a lot of benchmarks, I seem to do better running the tridentx 2000 @2133, 8-8-8-24 than @2450, 9-9-9-24.

I'm holding atm...the 4770k/mvie should arrive today or tomorrow. Have a lot going on this week/weekend but hoping to at least get everything set up so that on Monday night, I can start seeing how the cpu will do under ss. Going to use a 9800gx2 first so I can compare 3D results against what I got on the 5.5 2700k. Keeping my fingers crossed!

it looks more like:
on 3570/3770/4670/4770K:
- 2600-2800 CL9-10 is best
- 2400 CL9-10 is good
on 2500/2600/2700K:
- 2133+ is best if you can keep tight timings
- 2000 can be as fast as 2133 if you keep even tighter timings
- 1866 is still good if you keep tight timings
on 3930/4930K/3960/4960X:
- 2400-2666 CL9/10 is best if you keep tight sub timings
- 2800+ would be best but board won't boot at really tight sub timings so performance will be lower than 2400-2600
- 2133 is still good

2133 8-8-8 will be faster than 2400 9-9-9 only because board is setting worse sub timings at auto.
In this case set 2133 8-8-8 , enter BIOS and if you have greyed out timings under auto settings then set them to manual and rewrite all that was greyed out. Then change clock to higher and main timings to 9-9-9 and check if performance is still worse.
Exactly the same issue I had on high memory clocks on X79. 2600 with auto subs = ~62GB/s , 3000+ at auto subs = ~41GB/s.
I guess it's impossible to pass 80GB/s mark at CPU clocks below 5GHz and even best available memory.

That's one of reasons why older Elpidas are worse for benching on new platforms. Even though there are tight main timings then sub timings have to be more relaxed. PSC is still good just because boards let them run at tighter subs and are scalling better on ambient temps. To make good results on Hypers or BBSE you have to get good modules and run them on cold and high voltages.

The new setup (m6e/4770k) arrived yesterday. Going to eraser the board tonight and hope to get some benching in over the weekend.

So...now to figure out the best memory to run. Thinking the 2300 gskill pi sticks (should be able to run ~ 8-12-7-28 @ 1.85v) would be the best (they're highly binned) but also have tridentx 2400 (9-11-11-31) or 2666 (11-13-13-35).

Whatcha think?

I think it will depend on your chip but I have had my best results around the 22-2400 mark. May just be my CPU or memory but haven't had a lot of luck with higher speed stuff.

Thanks Johan45! Yeah...figure I'll go with the pi's to start then try others if I can't get them running fast.

funsoul said:

The new setup (m6e/4770k) arrived yesterday. Going to eraser the board tonight and hope to get some benching in over the weekend.

So...now to figure out the best memory to run. Thinking the 2300 gskill pi sticks (should be able to run ~ 8-12-7-28 @ 1.85v) would be the best (they're highly binned) but also have tridentx 2400 (9-11-11-31) or 2666 (11-13-13-35).

Whatcha think?

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For benching on reasonable voltages best will be TridentX 2400C9@2600+ C9/10.
If TridentX 2666 are single sided modules then I would play with max clock valid. If they're double sided then try something like 2800-2933 11-13-12/11-14-13/11-14-14. It can probably make 2800-3000 CL12 but results won't be so good as 2400+ CL9/10.
PSC can be good but that you already know. Can probably hit 2600 at low timings but also needs higher voltages like 1.9V and better cooling than Samsung/Hynix. On the board should be PSC profiles so you can compare timings and set something more optimal for your sticks.

Waiting for my cooling to get back but figure next up will be a 5.9GHz 2500k (under ss) with a pair of watercooled 9800gx2's (followed by reruns with the quad 580's or load up quad 7970's and try for some globals).

Can that 2500k be run at max with only ss? I think it will need to be colder so it does not degrade.

IIRC, these had a brutal cold bug in them so only around DI temps were acceptable in the first place.

Should be fine under SS.

Optimal temp for that specific 2500k is -20C. Should be able to get around 5.85-5.9 at -50.

In general, ss is plenty for sandy cpus

SBs are a problem that way. CB or CBB is typically somewhere between -10 and -50. Some chips can do -100, they live a lot longer.
Most seem to like -20 to -40.
I used 91% iso and DI for mine, that was about right. A solid SS is good too typically.

TJuan's 5.8SB liked things colder, more like -50 to -70 if I recall correctly.

Here are the 'instructions' that came with the chip:
It can run up to -70C, but optimal temp is -18C...-20C.
0C = 5900 (cold air)
-20 = 6000 (LN2)
-50 = 5950 (single stage)
So you can use single stage for some test runs at 5950 MHz, but for final score (5880-5890 MHz) you need only LN2 and good copper pot (2+ kg mass) to keep CPU temp as close to -18C...-20C as possible. Sometimes it can go to -25 under load and -15 idle.

SOOOO excited!!!! Just got an email from the builder...should have both the ss and cascade back by next weekend! woohoo!!!

Awesome! That's great news.

Greets Bobnova!!

I can't wait!! Asked him to let them run and leak test for extra days (as opposed to simple re-gassing) just to make sure everything's ok so that'll push things by a week. Too bad we have plans for something like the next 7 weekends :/ I'll be trying to squeeze in a couple hours per weeknight until things calm down.

Already have the fast 2500k and next 3930k (2 more of those to go) in the boards and erasered. Also ordered a few cans of conformal spray...want to do the 939 boards now then the 1155/2011 boards once I switch over to 775 cascade action. Then wrap-up the multi-vgas then, finally/eventually, start cold benching the vgas with the 2500k. Country cup will likely throw me off course again but ah well.....

4770k/mvie arrived yesterday. it will probably do better or the same @ 5.4 than the 2500K@ 5.9 for 3D

If your CC gets to -105C that is perfect for the 4770K, you should be able to get 6.0 for 2c2t and 5.8 4c8t
Hope you got a good one

Just thinking you may be wasting your time doing 3D with the 2500K when you have a beastly board and chip sitting there.

I know the feeling, have been beat down with a honey do list since spring started.

Have fun

Hiya Witchdoctor!

Yeah...the 4770k wasn't nearly as fast as promised so returned it (and the mvie). Fastest cpus on hand are the new (to me) 2500k and a 5.5-5.6 3930k. None of the 775's are tested yet but even if I get lucky and have a 6+ chip in there, no way (afaik) it'd be better for 3d than the others.

Thought 4770k's want REALLY cold...ln2 rules on those 2d's. Somehow -105C doesn't seem like it'd be competitive?

O

yea My chip blows but it can do 6.2 1c2t , it cold bugs out at 116C and crashes at 97C

That is with LN2 so you can imagine what a PITA it is keeping after it especially when keeping the GPU cold at the same time. Had to go to 6.0 as for some reason it could take 121C before it bugs out and down to 91C before it crashes so that was easier to manage.

That is why I am thinking a CC would be ideal as long as it can hold load, but you could always use a 1/2" x 2" copper sink under the die to aid in this, would help with Primes as well

Sure the good chips can take much more though, I would love to have a 6.2 to 6.4 3D chip

Any who the 3930K sounds beastly, Mine tops out at 5.1, should be able to really pound on some Vantage and up with that beast and at 5.9 you will pwn some 2D hardware trophies .....

Sounds like fun bro, Hoping I will be able to do some benching come July