A little PSC Help Needed

[Aleslammer]

Picked up two kits of Mushkin Ridgebacks DDR3 1600, 6-8-6-24 1.65v, I4Mem list showing them as Powerchip. Neither kit will post at DDR3 1600 in the Asrock board I'm using no matter how I come at it. Best so far is DDR3 1400, 6-8-6-24 1.35v, (tried lower voltage). Anybody willing to post a SS of their sub timings?



Have a kit of Adata in the mail ordered from Flushing NY tracked to San Fran then Sacramento yesterday morning, thought I'd have them today, (now in Chicago). Maybe too much pot smoke messing with the scanners. (Saw a news piece about a strong smell of weed in NYC in the mornings, nothing like a good buzz for the workday.)

Just checked an order for a Xeon from a place in Fremont CA, made Sacramento, it's in Chicago!!!!! 

[ShrimpBrime]

I had a few mushing kits, they like 9-10-9-27-36 timing sets up to 2400mhz.

[Mr.Scott]

Sounds like a board thing to me.
Will they post 1600 at 7-8-7-24 @ 1.65 ?

[MachineLearning]

From memory:

1.75-1.95v is where they're happy.
tRCD is always going to be a bit high, dependent more on temperature and platform than RAM itself, 9 - 11 is normal for 2000 - 2400+ range.
tRAS not as low as Hypers or D9GT, mine like 22 - 26.
tRC will go below 30.
tCAS & tRP will go pretty low, both 6 or 7 at ~2000MHz.
tRFC also platform dependent IIRC, again not as low as D9GT or Hypers. I'd try 96 then 84 then 72, probably won't go much lower than that.
I know FM1, FM2 both seem to like PSC so if all else fails, maybe try one of those.
DR PSC X-series clocks a lot like DR Elpida BDSE so if you have used that IC before, that's a decent starting place.

[Macsbeach98]

PSC Scotty is right they should run 1600 6-8-6-20 at 1.65v if they are any good.
Some of the early G.Skill Pi wont run at high speed my favorite PSC are G.Skill Trident I have a few sets they will run 7-11-8-24 1T at 2400 or 8-12-8-28 1T at 2600 in Z97.
Another thing I dont give PSC any more than 1.84v above that they get shaky.
Corsair Dominator 7.1 I have a few sets of those too they do okay but are not a patch on the Tridents.
Later today I will be setting up X79 I can run quad channel PSC 6-9-7-24 1T at 2100.

One thing if you bought them used they could be burnt too a lot of people get too greedy with the voltage.
I have set limits these days PSC 1.85v Hypers 1.96v

[Aleslammer]

Thanks for the replies.

Have a kit of 3x2 DDR3 2000 Transcends, only kit in the house that I know are PSC, dropped two in the board as a check. After I remembered RAM voltage was at 1.35v things started working better. Ran up hot 1.85v 9-9-9-24 1t to 2133 at 2200 went to 9-11-9-26 1t, made 2400, no 2600, backed voltage down, post 2400 @ 1.60v, need 1.65v for windows, so some where to start for the secondaries on the Mushkins. Haven't played with the Transcends much as they don't tighten up well at lower frequencies.


As for burnt on the Mushkins, one kit has seen more than a few boards based on finger wear, the other, some of the fingers don't have any wear marks at all, not an indicator of abuse but all I have to look at. What you see for the Transcends are some of the same primary timings & voltages used on the Mushkins, though never went above DDR3 1600. Hopefully a board - RAM problem as this board will probably end up a dust collector, not liking it at all at this point, then again not a lot I've ever liked about Haswell.

[Aleslammer]

Set the primaries and secondaries manually, rest on auto. RAM posted, backed the primaries down to rated, 1.65v, now to see if they are any good.

[dr4g00n]

It's very possible that the board simply just doesn't like the mushkins. Sub 2000 bin PSC's generally don't do very well so I wouldn't expect too much out of them.

I think you just need to find some good PSC, G.Skill (Flare/Trident/Pi) 2000C9/2200C7 or similar bins. There are different PSC IC's and the PCB they're on also make a difference.
Unless it's busted the Z97 OCF should be good for 2600C8 easily with a good kit and IMC.

[Aleslammer]

Flashed the ASRock Z97 OC Formula to latest beta BIOS as I was going to run some Broadwell's, might be the problem, board ain't for grinding. Dropped a Xeon Haswell in yesterday, max BCLK was 104.2, not where I wanted to be. Switched to an Asus Maximus VII Hero, ran BCLK to 106.8 and every kit of RAM tried so far posted XMP, received it with the latest beta BIOS, not what I was going to do but it seems to work.

Mushkins aren't too bad below DDR3 2000 but don't scale up well as of now. Going to do a more testing today.

[Aleslammer]

Been playing with the Mushkin's, still need to play with trimmings. 1.8v on the RAM, no tweaks done for SP32, grinding.

[Aleslammer]

Ran up the more heavily used kit (based on finger wear) to see if they were as good as the first kit tested. Capped at 1.75v, compared to 1.825v for the first tried, any more on either just made them flaky. Running quad channel on X79, best benchable has been DDR3 2020, 7-9-7-28, 1.75v, but not SP32 stable. Not going to complain for DDR3 1600 sticks.

Wouldn't posy at a 103 BCLK.

[Macsbeach98]

Interesting is that on your chiller you are supposed to be able to get a couple of more Mhz baseclock if locked chips are cold.

[Aleslammer]

RAM limiting, CPU on ambient water was a little shy of 108, dice run that I was trying to catch little above 109, might have gotten there with the chiller but haven't been using it.