Core i7 Overclocking by Batch #

[Pisklink]

Any Idea how safe 1.3 QPI is for long term usage.

This is ofcourse hard to tell since there is no longitudinal research or whatsoever. According to Intel's specs a QPI voltage of 1.35v is the maximum.

[sparks.oc]

Ok this was it. Call my processor dead. Died while swapping my cooling paste. I did not do anything special but clearly it was still enough.

I didn't touch my memory before I had problems. Of course I did try different banks after the problems (with 1, 2 or 3 dimms). I just swaped my thermal paste, nothing more. Very strange.

I'll be up and running in 1-2 weeks. A new mobo is ordered. It was tested as defective. The processor is still being tested. I expect it to be ok (as I figure that the problem is in 1 of the 2).

[Infa]

Ok, now I have installed my x64 OS , and did a LinX again, all went well as supposed that extra mem didnt do anything to stabilty, and i passed 20 rounds instead of 15 as before. Setting is as followed.

System Info:

i7 920 @ 4.2Ghz (Batch #3841A627), Gigabyte UD5 (F6C BIOS), Corsair XMS3 3GB DDR3 1600 RAM, Water Cooled (Sign)

Settings:

CPU Ratio: 21x
BCLK: 200
DRAM: 160 mhz
UCLK: 3600 mhz
HT: Off
Turbo: On
C1E: Off
C3/6/7: Off
TM: off
Virt: off
Prochot:off
QPI 36X
Mem 8X
UnCore 18x
Turbo mode: Turbo

Voltages:

CPU Voltage: 1.40000v (1.36 Loaded)
CPU PLL Voltage: Auto
QPI Voltage: 1.38 (bios)
DRAM Voltage: 1.70 (1.69 bios)
QPI PLL: Auto

Timings: CL 7-8-7-20

Notes, maxtemp during test 66c. this is linx , and not prime therefore higher temps also.

[highoctane]

Ok, now I have installed my x64 OS , and did a LinX again, all went well as supposed that extra mem didnt do anything to stabilty, and i passed 20 rounds instead of 15 as before. Setting is as followed.

Now that looks better, 59gflops!

[Infa]

hehe hell yeah no problems so far, 64bit yeah

almost 60flops, good enough. and pretty good cpu, though i need more likely 1.40 for HT ON, but who needs it? Those who say, why get a i7 if not HT ON? why? its integrated IMC, its Native Quad, performs a little better than wolfdale(dual) and its quad, i never had a quad before, and i like it, i dont need HT, come on, show me how much better (virtual) cores are in everyday usage and then hit me instead of smutter me. Im ok if if im wrong, then i can admit my defeat. but compare surfing benching and gaming, and then come back and show me the advantage with HT.

Cheerio

[funk32]

here is mine, batch 3837B215, HT off.

im now at 4.2ghz with HT on stable 1.4v

[glide 1]

Anyone with this batch # - 3846B109 DO? please post your oc results and general clocks. Just waiting for a few more parts before setting mine up. Thanks in advance.

[jcniest5]

Anyone with this batch # - 3846B109 DO? please post your oc results and general clocks. Just waiting for a few more parts before setting mine up. Thanks in advance.

What are you waiting for? Just it up and be the first one to post your result. From reading the other two D0 threads, doesn't look like someone has your batch, so why don't you just go ahead and set it up.

[glide 1]

What are you waiting for? Just it up and be the first one to post your result. From reading the other two D0 threads, doesn't look like someone has your batch, so why don't you just go ahead and set it up.

I did - and here is a quick run with prime. Everything on auto except vcore and multiplier.






Been searching around and this DO batch seems to be ok. Happy.

[The Water Dog]

Im not 100% sure, but looks like the same batch that im waiting for.
But i see that many D0 need less volt then C0\CI need, anyway i hope i get one that is good.
And off course i will post here when the cpu and mobo come=)

[jcool]

hehe hell yeah no problems so far, 64bit yeah

almost 60flops, good enough. and pretty good cpu, though i need more likely 1.40 for HT ON, but who needs it? Those who say, why get a i7 if not HT ON? why? its integrated IMC, its Native Quad, performs a little better than wolfdale(dual) and its quad, i never had a quad before, and i like it, i dont need HT, come on, show me how much better (virtual) cores are in everyday usage and then hit me instead of smutter me. Im ok if if im wrong, then i can admit my defeat. but compare surfing benching and gaming, and then come back and show me the advantage with HT.

Cheerio

See here for info on HT vs. no HT

What I use HT for most is crunching (BOINC WCG), there the speedup by HT is almost 40% over no HT

Of course, different people have different priorities (mostly gaming... ) but mine lies with crunching, so I run HT all the way.
Also any rendering app will profit hugely from using HT, even Winrar - Games, not so much. Maybe GTA4 or Supreme Commander, but that's about it really.

@glide1: Nice CPU, my 975 needs around the same Vcore to run 4Ghz, which means you should be good for 4,4-4,5Ghz stable on water

[chefnr1]

1.4vcore stock cooler,,Batch 3837A498

http://valid.canardpc.com/show_oc.php?id=495579

[marcolecorse]

Config
Pseudo : marcolecorse
Processeur : i7 920 @ 4602
Refroidissement CPU : H2O
Mémoire : 3x1Go PC3-10700H Kingston @ 876 7-8-7-20 1T
Carte mère : Rampage 2 extreme

Score
08'02".141

Screen

[roller11]

Nice clocks!

[glide 1]

1.4vcore stock cooler,,Batch 3837A498

http://valid.canardpc.com/show_oc.php?id=495579

Any reason why it says 4 cores and 4 threads in the CPUZ screen shot? Should'nt it be 4cores and 8 threads? Just curious.

[jcniest5]

Any reason why it says 4 cores and 4 threads in the CPUZ screen shot? Should'nt it be 4cores and 8 threads? Just curious.

You may have HT turned off...

[quattro_]

anyone knows anything about 3847A990 ??
ill have it next week and just wanted to check if its a good one, if not ill sell it new "unopened" .

[col_dilian]

Finally got time to oc my cpu to 4 GHz.

Rampage Extreme II (1306 bios)
Core i7 920(Batch code 3841A448)
Corsair Dominators 1600 6GB
Lapped True 120

Cpu - 200x20 Ht on
QPI - 3600
Uncore - 3200
Ram - 1600 8-8-8-24 1T
Vcore - 1.34375
QPI - 1.2750
Dram - 1.65
Rest on Auto

Idle temps 38-37-38-37
Max Temps After 100 linx rounds 81-80-80-76

3.78 worked at vcore 1.20625 qpi 1.2 max 63 degress. Dunno if 4.0 is worth it for 24/7 use now.

[Lu(ky]

[/IMG]




Been searching around and this DO batch seems to be ok. Happy.

What shows it is a DO stepping on here?? I am heading over to Microcenter here in Tustin, Cali to pick some up. Not sure where it says the DO stepping at? Anyone??

[road-runner]

What shows it is a DO stepping on here?? I am heading over to Microcenter here in Tustin, Cali to pick some up. Not sure where it says the DO stepping at? Anyone??

The SLBEJ is D0...

[jcniest5]

What shows it is a DO stepping on here?? I am heading over to Microcenter here in Tustin, Cali to pick some up. Not sure where it says the DO stepping at? Anyone??

Don't just pick one up without knowing the S-spec. If it says: S-spec: SLBCH, then it's not a D0 stepping. If it says: S-spec: SLBEJ - then it's a D0.

[freshy]

SLBEJ but what about if its a A batch , are the B batches better ?

[jpm804]

SLBEJ but what about if its a A batch , are the B batches better ?

This opinion may vary, but it's probably too erly to tell at this moment... This similar discussion I think was had when the first 920 chips came out and there were some "is B better then A batch conversations/"

I have seen some fine examples of some good B batches but now I slowing seeing some good clocks on some later A batches...

[Lu(ky]

The SLBEJ is D0...

Don't just pick one up without knowing the S-spec. If it says: S-spec: SLBCH, then it's not a D0 stepping. If it says: S-spec: SLBEJ - then it's a D0.

Thanks for the help...

Well I went to MicroCenter and they just got a shipment and they had were S-spec: SLBCH I have 2 guys there that will call me when they see them. So I plan on picking up a couple. I wanted a new i7-975, but it will not be out tell June now..

[M-XXXX]

I finnaly got my i7 system (for now C1 processor, still waiting for D0 to arrive at our little forgotten country)

I have one question: About Turbo. If I turn turbo on CPU-z shows multiplayer 21, and EVGA utility shows 21 for core0, and all other have 20. Is that true, or did I mixed something up?

Ive couldn't resist to post at least one pic: