ASUS P8P67 Pro/Evo/Deluxe OC discussion thread

[Sam_oslo]

Is it inevitable to have 1600MHz idle freq or does disabling Speedstep and all C-states etc let you run the CPU at max freq when idling?

You can disable them, and then it will idle at turbo-speed, but you will get a bit more power-usage and a few 'C more heat at idle.
I'm not sure how big the power-usage is in reality, but I've been getting 32w vs 8w at @4.5Ghz 1.27, both according to real-temp.

[ghost_recon88]

Anyone considered crossflashing the Deluxe to the Extreme? Appears the hardware is the exact same. Only difference I see is the extra PCIe slot in the Extreme, and it has a slightly different Marvell SATA controller.

[poke349]

yea i read that, but didn't quite understand at the time since i was just waiting for my board to ship. but now with theory and practical knowledge, it makes total sense. but im just curious on how much the load voltage will go up to since you say it depends on how intensive the load is. also, do you measure your load voltage at peak then? or just an average you think that seems consistent? ah, so many questions, been a while since i've jumped on new hardware :P

Yeah, I'm measuring the peak. LinX with AVX and HT off does give higher load vcore than prime95.

I think current draw plays a huge factor in the LLC amount.

[Pacha]

You can disable them, and then it will idle at turbo-speed, but you will get a bit more power-usage and a few 'C more heat at idle.
I'm not sure how big the power-usage is in reality, but I've been getting 32w vs 8w at @4.5Ghz 1.27, both according to real-temp.

Ok thanks.
What are the idling temps for you at 1.6GHz and 4.5GHz?
BTW, how much time does the chip stay at full speed when it's not stressed anymore?

Is there no stability issue with constant changes in freq and voltage like this?
Does the chip goes back to lower voltage at 1.6GHz?

[illuminati-hwt]

Guessing some hundred ms before freq. drops.

Havent had stability issues with 5ghz oc and idle at 1,6mhz (manual volt setting).

Chip doesnt drop volt unless you use offset mode for voltage.

[Sam_oslo]

Ok thanks.
What are the idling temps for you at 1.6GHz and 4.5GHz?
BTW, how much time does the chip stay at full speed when it's not stressed anymore?

Is there no stability issue with constant changes in freq and voltage like this?
Does the chip goes back to lower voltage at 1.6GHz?

Just 2-3 degrees different, and all my case-fans spins at ~60% that can add to it, but temp-difference is not a big deal. I'm more concern to know about the real different in power-usage, and mentioned temp because it indicates power-usage, but the temp in not a big deal by itself.

Cores are very responsive, they jump up and down real-time. I'm using manual vCore, with LLC=Ultra, and the it's 1.288v/1.272v (Idle/Load). No stability issue at all.

If you want low voltage at idle, then you have to use oftest mode, but I personally haven't used it, and don't know much about it.

[bokoy]

I´m trying to find linx with latest linpack libraries, but no luck, just found 0.6.4 that already had. Can you please tell me were to find it??
Thanks

[Gr1mR34p3r]

Just download this and replace linpack_xeon32.exe and linpack_xeon64.exe.
http://software.intel.com/en-us/arti...pack-download/

[Mic]

I made a wrong buy and ended up with a I7-2600 instead of the I7-2600K. This CPU seems to be locked at 42 multiplier, is there anyway to get around this yet?

[Pacha]

Guessing some hundred ms before freq. drops.

Havent had stability issues with 5ghz oc and idle at 1,6mhz (manual volt setting).

Chip doesnt drop volt unless you use offset mode for voltage.

Just 2-3 degrees different, and all my case-fans spins at ~60% that can add to it, but temp-difference is not a big deal. I'm more concern to know about the real different in power-usage, and mentioned temp because it indicates power-usage, but the temp in not a big deal by itself.

Cores are very responsive, they jump up and down real-time. I'm using manual vCore, with LLC=Ultra, and the it's 1.288v/1.272v (Idle/Load). No stability issue at all.

If you want low voltage at idle, then you have to use oftest mode, but I personally haven't used it, and don't know much about it.

Thank you guys, that's interesting.

I'm not into calibrated vdroop for idling, "normal" vcore all the time is fine for me.
However, wouldn't suitable vcore for full freq be a little too much for 1.6GHz?
I never thought much about if it would impact anything or not if voltage is high at low freq.

[bokoy]

Just download this and replace linpack_xeon32.exe and linpack_xeon64.exe.
http://software.intel.com/en-us/arti...pack-download/

Thanks a lot, are those located in benchmark/linpack/linpack_xeon32.exe and linpack_xeon64.exe?
Thanks again

[xEnergie]

@poke, i just hope whatever i throw at it doesn't decide that it needs to add more vcore during load. just wondering, what's to stop it from giving 1.5+ hopefully, whatever i do, doesn't decide it needs that much juice :P

@ stoned, nice memory clocks there. I too have oc'd my ram and got 25 linx runs off at 2133 9.10.9.28 1t 1.55v. this coming from 1600 6.8.6.24 sticks.

[EniGmA1987]

Just download this and replace linpack_xeon32.exe and linpack_xeon64.exe.
http://software.intel.com/en-us/arti...pack-download/

If you are using Intel Burn Test, and it has a folder called LinDada, then 2 folders called x86 and x64, the .exe in each of those is simply called "linpack32" and "linpack64". Do I rename the linpack_xeon32.exe to linpack32 and replace it like that?

[poke349]

@poke, i just hope whatever i throw at it doesn't decide that it needs to add more vcore during load. just wondering, what's to stop it from giving 1.5+ hopefully, whatever i do, doesn't decide it needs that much juice :P

@ stoned, nice memory clocks there. I too have oc'd my ram and got 25 linx runs off at 2133 9.10.9.28 1t 1.55v. this coming from 1600 6.8.6.24 sticks.

It isn't gonna get much higher than LinX. At least I haven't seen anything higher... Don't worry about it.

If LinX is peaking at 1.368, it's not gonna get anywhere near 1.4v - let alone 1.5.

[McLaren__F1]

Flashed to 1305 Bios, any recommended settings for my configuration? Quick LinX test

Ati Overclock: Manual
BLCK: 100.0
Turbo Ratio: Ratio by all Cores
CPU Ratio: 46
Internal PLL Overvoltage: Auto
Memory Frequency: DDR3-1600MHz (8-8-8-24)
EPU Power Saving Mode: Disabled

Load-Line Calibration: Extreme
VRM Frequency: Manual
VRM Fixed Frequency Mode: 350
Phase Control: Extreme
Duty Control: Extreme
Current Capability = 100%

CPU Voltage: 1.32
DRAM Voltage: 1.65
Vccsa: Auto
Vccio: Auto
PLL Voltage: Auto
PCH Voltage: Auto
CPU Spread Spectrum: Auto

[Sam_oslo]

Flashed to 1305 Bios, any recommended settings for my configuration? Quick LinX test

Ati Overclock: Manual
BLCK: 100.0
Turbo Ratio: Ratio by all Cores
CPU Ratio: 46
Internal PLL Overvoltage: Auto
Memory Frequency: DDR3-1600MHz (8-8-8-24)
EPU Power Saving Mode: Disabled

Load-Line Calibration: Extreme
VRM Frequency: Manual
VRM Fixed Frequency Mode: 350
Phase Control: Extreme
Duty Control: Extreme
Current Capability = 100%

CPU Voltage: 1.32
DRAM Voltage: 1.65
Vccsa: Auto
Vccio: Auto
PLL Voltage: Auto
PCH Voltage: Auto
CPU Spread Spectrum: Auto

http://i51.tinypic.com/xqmbdd.jpg[/IMG]

You should keep the DRAM Voltage: 1.50v for 24/7 to stay on safe side. That's what Intel recommends. Or at least keep it under 1.55v.

Your RAM-performance is probably an overkill anyways, and it's better to go down on RAM speed/voltage to keep the CPU/IMC on the safe side.
At least until we know more about the long term effect of high vDIMM.

And these:
Vccsa: Auto
Vccio: Auto
PLL Voltage: Auto
PCH Voltage: Auto
I type inn my own values manually, mostly default values, because some of them can change sometimes, maybe a bit too much, on Auto. But that's not a big deal anyways.

[McLaren__F1]

You should keep the DRAM Voltage: 1.50v for 24/7 to stay on safe side. That's what Intel recommends. Or at least keep it under 1.55v.

Your RAM-performance is probably an overkill anyways, and it's better to go down on RAM speed/voltage to keep the CPU/IMC on the safe side.
At least until we know more about the long term effect of high vDIMM.

And these:
Vccsa: Auto
Vccio: Auto
PLL Voltage: Auto
PCH Voltage: Auto
CPU Spread Spectrum: Auto
I type inn my own values manually, mostly default values, because some of them can change sometimes, maybe a bit too much, on Auto. But that's not a big deal anyways.

My Ram is Rated 1.65V, they are these kits here

[Sam_oslo]

My Ram is Rated 1.65V, they are these kits here

Yeah, but you IMC is rated 1.5v.

The RAM may survive those voltages, but too high vDIMM will puts too much stress on your CPU/IMC. Intel recommends 1.5v for 24/7, and max 1.575 for these CPUs.

[Leeghoofd]

got the same McLaren F1, they work fine at 1.6-1.625, but not at 1.5... at least not at 1600mhz... don't see an issue with even running 1.7Vdimm... we have seen similar warnings with I7... and not many 1.5 kits around...

[Sam_oslo]

got the same McLaren F1, they work fine at 1.6-1.625, but not at 1.5... at least not at 1600mhz... don't see an issue with even running 1.7Vdimm...

1.7v is too much, way too much. Your CPU/IMC may survive for a long time, but we don't know it. It may also die on you in a couple of months, or somehow degrade. Who knows?

If RAM was a bottleneck I could understand why you would want to take a risk, but SB has introduces such a huge RAM-improvement, that even a 1333MHz would be good enough for 24/7 usage, and all desktop applications.

So why should we push it to potentially dangerous territory when you can't have any real benefit for 24/7 use?

[Leeghoofd]

So be it, I'll RMA the CPU... I don't care if it dies... If it dies from 1.65Vdimm or slightly higher, then that's a flaw in my opinion... Most here that own high speed rams ain't gonna downclock to run at 1.5ish voltages... nor will they buy 1.5Vdimms for that reason either... and believe me it will not die as quick as that... a while back it was too high FSB term voltages, then Vcore spikes, then I7 with low voltage rams and now this...

[McLaren__F1]

Just set the RAM to 1.55V and ran a quick Linx test

[Leeghoofd]

Try a HCI memtest mate, mine crapped out when playing Battlefield, Linx though was perfectly fine... if you can run these at 1.55, good for you... mine need a tad more

[Peter949]

lol nice desktop haha i wouldnt show some of the things on there.

[Sam_oslo]

So be it, I'll RMA the CPU... I don't care if it dies... If it dies from 1.65Vdimm or slightly higher, then that's a flaw in my opinion... Most here that own high speed rams ain't gonna downclock to run at 1.5ish voltages... nor will they buy 1.5Vdimms for that reason either... and believe me it will not die as quick as that... a while back it was too high FSB term voltages, then Vcore spikes, then I7 with low voltage rams and now this...

If you don't care, then that's OK. Everybody can kill a CPU easily, but it's more fun to find a healthy and good 24/7 OC.

Just set the RAM to 1.55V and ran a quick Linx test

http://i54.tinypic.com/wwamvr.png[/IMG]

That looks much better, see what you get get with 1.55v. Lesson up timings as much you can, it won't have much effect on performance.