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My first OC showing strange results - Page 2

post #11 of 16
Thread Starter 
Quote:
Originally Posted by BababooeyHTJ View Post
IBT can be flaky. I have been using Linx since it has been more reliable for me. You could try wprime to see if there is any difference in performance.
Stock (3.4GHz with Turbo):
IBT - 79sec, 54GFlops
LinX - 60.7sec, 47.8GFlops
wPrime 32M - 10.997sec
wPrime 1024M - 348sec

4.0GHz @ 1.2v (+17.6%):
IBT - 76sec (+3.80%), 57GFlops (+5.56%)
LinX - 51.5sec (+15.1%), 56.2GFlops (+17.6%)
wPrime 32M - 9.327sec (+15.2%)
wPrime 1024M - 296sec (+15.0%)

It seems IBT is, indeed, flaky. Thanks for the heads-up there! I'm still wondering why Speedstep isn't working properly; it's clearly set to "enabled."

What would you guys suggest as the best stability/temp tester? I chose IBT because it pushed higher temps than Prime95 for me, but if it's inconsistent or flawed I don't want to use it. Can LinX function as a tester - it seems to stress better than Prime like IBT did - or is Prime95 good enough?
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Hard DriveOptical DriveOSMonitor
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post #12 of 16
Linx and IBT are the same thing, it's just a different frontend. I like Linx. I also use a few different prime runs. I've had Prime show errors pretty quickly where IBT ran with no problems. Don't underestimate Prime95. I like to run small ffts and a custom run.

This will stress the memory and memory controller harder than any test that I know of. Where is says memory to use just put in all of your available ram.

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post #13 of 16
Thread Starter 
I figured out the SpeedStep issue, and I feel like an idiot.

Quote:
Originally Posted by Juan_Jose, ASUS Technical Marketing Specialist
It possible to overclock while keeping speedstep enabled and use the offset voltage method for Vcore increase this will provide the overall best in temperature and heatsink performance as well as generally efficiency and extension of the lifespan of the motherboards its components and the CPU. This is due to the Turbo Multiplier working and exucting ramping as Intel intended.
Example leaving all CStates and Speedstep enabled will allow the CPU to idle down in Vcore and frequency ( 1600MHz ) and ramp up when under load to 4.8GHz when needed.
Source
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post #14 of 16
Thread Starter 

Ok, so I started from scratch.

I found the video below from Newegg/ASUS giving a demo of the P8P67 UEFI.


At around 14:00 you can see that the CPU is indeed being throttled by SpeedStep, so I followed the ASUS Rep's official guide to overclock. I changed the following and didn't touch anything else:

CPU Turbo Multiplier: By Per Core, 45 each
CPU Voltage: Manual, 1.35v
DRAM Timings: 7-8-7-24-2 (stock)
DRAM Voltage: 1.60v (stock)

I changed no other settings. EIST is enabled, and all other settings are unchanged from stock.

CPU-Z confirms the settings, and benches are in line with expectations. The overclock is successful, though it hasn't been stability tested. I'm more concerned at the moment with the following question: Why isn't my speed being throttled?

Here are his setting from the video - where SpeedStep is functional - compared to mine:

CPU Turbo Ratio: 48x (45x)
Load-line Calibration: Ultra High (Auto)
Phase Control: Extreme (Auto)
Duty Control: Extreme (T. Probe)
CPU Voltage: 1.4v (1.35v)

None of these have to do with EIST, so why isn't it working??
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Core i5-2500k ASUS P8P67 B3 Sapphire Radeon HD 6850 1GB GDDR5 G.Skill 4GB (2x2GB) DDR3 1600MHz 7-8-7-24 
Hard DriveOptical DriveOSMonitor
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post #15 of 16
Quote:
Originally Posted by ayyini View Post
Hello everyone!

I just installed my Hyper 212+ on my sig rig this afternoon and was digging in for my first overclock ever. Given that this is my first shot, I was going to try to just do something moderate for a while. Say under 1.3v and 65C.

The first thing I did was up the multi to 40x and the VCore to 1.2v. CPU-Z reports the new settings properly, but it does not show throttling from Speedstep. Is this normal? There is a setting in UEFI for Speedstep which is unchanged from "auto."

But wait, things get more interesting! For stability testing I ran IntelBurnTest. During the test, the temps I am getting (30C idle, ~50C load) are the same as my stock temps. This does not seem right. Also, my time and speed per calculation (~79sec, 57GFlops) are identical to my stock results. It seems to me that they should be around 20% better at 4GHz.

What's going on here?
intel chips ignore settings that are wrong and will even divide given clocks to create a stable run.
post #16 of 16
Thread Starter 
More Info:


SpeedStep does not work even when using Offset Voltage instead of Manual Voltage as indicated in the official guide linked above (not to mention that Manual should throttle as per the video demonstration).


Using Offset Voltage, load should be around 1.21v (1.200v stock + 0.005 Offset + 0.005 Additional Turbo Voltage); it actually runs at ~1.34. Or am I missing something here?


After restoring my UEFI changes to a saved profile with proper RAM settings (and everything else untouched from stock), SpeedStep still does not work. I have to "Restore Optimized Defaults," then manually re-do my RAM settings every time. This seems wrong.
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CPUMotherboardGraphicsRAM
Core i5-2500k ASUS P8P67 B3 Sapphire Radeon HD 6850 1GB GDDR5 G.Skill 4GB (2x2GB) DDR3 1600MHz 7-8-7-24 
Hard DriveOptical DriveOSMonitor
Samsung Spinpoint F3 1TB 7200RPM Lite-On 24x DVD Burner Windows 7 Home Premium 64-bit HP 2310m 
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My System
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CPUMotherboardGraphicsRAM
Core i5-2500k ASUS P8P67 B3 Sapphire Radeon HD 6850 1GB GDDR5 G.Skill 4GB (2x2GB) DDR3 1600MHz 7-8-7-24 
Hard DriveOptical DriveOSMonitor
Samsung Spinpoint F3 1TB 7200RPM Lite-On 24x DVD Burner Windows 7 Home Premium 64-bit HP 2310m 
PowerCase
NZXT Hale 90 650W NZXT Phantom White 
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