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i5 750 @ 4 GHz Any tips ?
- Thread starter Cesar67
- Start date
Hmm.
Just thought about it and remembered my RAM is a 1.6V kit.
Raised that to 1.64 and looks like I can now drop CPU voltage a bit, trying 1.3 instead of 1.35626 now.
Got work now so I'll have a more detailed look this evening
Actually think I'll leave it stress testing, tell you if its stable later.
Just thought about it and remembered my RAM is a 1.6V kit.
Raised that to 1.64 and looks like I can now drop CPU voltage a bit, trying 1.3 instead of 1.35626 now.
Got work now so I'll have a more detailed look this evening
Actually think I'll leave it stress testing, tell you if its stable later.
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Associate
Got any advice for a fellow Gene user hotwired?
i5
Maximus Gene III
H50
with this RAM
Cant get it to be stable at 4.00ghz temps not going past 61 during IBT
Not too fussed really, seems to handle 3.7 / 3.8 fine. Just wanted to know if i was doing anything wrong when tying to get it to 4.00
i5
Maximus Gene III
H50
with this RAM
Cant get it to be stable at 4.00ghz temps not going past 61 during IBT
Not too fussed really, seems to handle 3.7 / 3.8 fine. Just wanted to know if i was doing anything wrong when tying to get it to 4.00
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DRAM at 1.60 and CPU at 1.3 AND SPEEDSTEP OFF = still waiting for stress test to crash out. Interesting...
Nico I'll post my settings after I'm done testing, in the meantime try it with speedstep off.
Oddly enough speedstep changes dont show up in my CPUZ, I get shown the maximum settings all the time. Only Tmonitor tells me what it's really currently at.
Nico I'll post my settings after I'm done testing, in the meantime try it with speedstep off.
Oddly enough speedstep changes dont show up in my CPUZ, I get shown the maximum settings all the time. Only Tmonitor tells me what it's really currently at.
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Well that was a whole pile of *meh*
Speedstep on or off made no difference in proper stress testing.
So final settings for 4GHz IBT stable on my GENE III:
i5 750 @ 20 x 200MHz
4GB GSkill @ 1600MHz 7-7-7-24 2T
CPU: 1.35626V
CPU PLL: 1.802V (default)
CPU PCH: 1.06V (default)
DRAM: 1.60325V
IMC: 1.20575V
Speedstep = Enabled/Disabled (no difference)
LLC = Auto/Enabled (same thing)
Gotta say, Chapa has a heck of a chip if it's doing 4GHz under 1.3V and can do 20 passes in IBT.
Speedstep on or off made no difference in proper stress testing.
So final settings for 4GHz IBT stable on my GENE III:
i5 750 @ 20 x 200MHz
4GB GSkill @ 1600MHz 7-7-7-24 2T
CPU: 1.35626V
CPU PLL: 1.802V (default)
CPU PCH: 1.06V (default)
DRAM: 1.60325V
IMC: 1.20575V
Speedstep = Enabled/Disabled (no difference)
LLC = Auto/Enabled (same thing)
Gotta say, Chapa has a heck of a chip if it's doing 4GHz under 1.3V and can do 20 passes in IBT.
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I've tried getting to 4Ghz but can't seem to get it stable. Currently running with 3.8ghz @ 1.28 volts, which I'm quite happy with..... for now! 
Below temps are at idle and after 6 hours of Prime95 it settles at ~70. A 4 hour BFBC2 session and temps only hit 53ish. Don't think that's too bad.
Below temps are at idle and after 6 hours of Prime95 it settles at ~70. A 4 hour BFBC2 session and temps only hit 53ish. Don't think that's too bad.
You talking to me?
If so...
CPU Ratio - Auto
Speedstep - Enabled
Turbo Mode - Disabled
Xtreme Phase Full Power Mode - Auto
BCLK - 190
PCIE - 105
DRAM Frequency - 1520Mhz
QPI Frequency - 6086Mhz
CPU Voltage - 1.28v (1.24v actual showing in BIOS)
IMC - 1.15v (1.17v actual showing in BIOS)
DRAM - 1.65v (1.65v actual showing in BIOS)
CPU PLL - 1.8v (1.83 actual showing in BIOS)
PCH - 1.15v (1.17 actual showing in BIOS)
LLC - Disabled
It runs Prime95 stable for 6 hours, not tried longer. I don't have IBT but will give it a go when I have time!
Soldato
Hey sorry for the slow update.
I am running 4ghz now. 4.2ghz at 1.41v was almost stable but was hitting 73c when running IBT and Prime at the same time (pretty much the ultimate stability test imo).
I am now stable at 4ghz. I am working on lowering the QPI/VTT below 1.21v. This is the recommended max but I would like it a bit lower.
Settings currently are:
CPU Ratio - 20
Speedstep - Off
Turbo Mode - Off
Xtreme Phase Full Power Mode - Off
BCLK - 200
PCIE - 100
DRAM Freqency - 1600Mhz
QPI Frequency - The lower multi (32x iirc)
CPU Voltage - 1.3685v in bios
QPI/VTT - 1.17v
DRAM - 1.64v (manufacturer rates up to 1.65v)
CPU PLL - auto
PCH - auto
LLC - off
I have no doubt that my cpu would do 4.2ghz, but the added 0.06-0.07v is not worth it imo.
EDIT: Sig updated and when running Prime and IBT at the same time, one core reached 67c max but that is it
I am running 4ghz now. 4.2ghz at 1.41v was almost stable but was hitting 73c when running IBT and Prime at the same time (pretty much the ultimate stability test imo).
I am now stable at 4ghz. I am working on lowering the QPI/VTT below 1.21v. This is the recommended max but I would like it a bit lower.
Settings currently are:
CPU Ratio - 20
Speedstep - Off
Turbo Mode - Off
Xtreme Phase Full Power Mode - Off
BCLK - 200
PCIE - 100
DRAM Freqency - 1600Mhz
QPI Frequency - The lower multi (32x iirc)
CPU Voltage - 1.3685v in bios
QPI/VTT - 1.17v
DRAM - 1.64v (manufacturer rates up to 1.65v)
CPU PLL - auto
PCH - auto
LLC - off
I have no doubt that my cpu would do 4.2ghz, but the added 0.06-0.07v is not worth it imo.
EDIT: Sig updated and when running Prime and IBT at the same time, one core reached 67c max but that is it
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What does your vcore drop to under load acc. to CPU-Z? My board suffers from a horrible vdroop.
I'm sick of overclocking my i5, I got it stable with 1.263V LLC on in LynX but when I got to benchmarking with 3DMark Vantage, the PC froze after running all tests. Upped the vcore by one step, 1.27V in BIOS, ran Vantage no problems, 20 loops of max IBT testing, Vantage again (scored 16k overall), didn't save the score somehow so I did run it again and... my rig stopped responding after all the tests have been done. It froze on the scores, thank you very much.
I'm sick of overclocking my i5, I got it stable with 1.263V LLC on in LynX but when I got to benchmarking with 3DMark Vantage, the PC froze after running all tests. Upped the vcore by one step, 1.27V in BIOS, ran Vantage no problems, 20 loops of max IBT testing, Vantage again (scored 16k overall), didn't save the score somehow so I did run it again and... my rig stopped responding after all the tests have been done. It froze on the scores, thank you very much.
Soldato
CPU Voltage - 1.3685v in bios
CPU-Z Idle Voltage - 1.344v
CPU-Z Prime 95 voltage - 1.312v
CPU-Z IBT v2.4 voltage - 1.296v
.You talking to me?
If so...
CPU Ratio - Auto
Speedstep - Enabled
Turbo Mode - Disabled
Xtreme Phase Full Power Mode - Auto
BCLK - 190
PCIE - 105
DRAM Frequency - 1520Mhz
QPI Frequency - 6086Mhz
CPU Voltage - 1.28v (1.24v actual showing in BIOS)
IMC - 1.15v (1.17v actual showing in BIOS)
DRAM - 1.65v (1.65v actual showing in BIOS)
CPU PLL - 1.8v (1.83 actual showing in BIOS)
PCH - 1.15v (1.17 actual showing in BIOS)
LLC - Disabled
It runs Prime95 stable for 6 hours, not tried longer. I don't have IBT but will give it a go when I have time!
Changed the following...
CPU Voltage - 1.265v
IMC Voltage - 1.18v
DRAM Voltage - 1.64v
LLC - Enabled
Ran a 10 loop IntelBurnTest @ 2560MB and completed without error. Maximum temperature was 78 on Cores 1 & 2. That's about the limit I'm willing to stretch to in the name of science
I know it's "only" 3.8Ghz but it's good enough for now. I think 4Ghz will require better cooling.
Heh, I'm personally back to 3.374Ghz / 160x 21 with turbo and speedstep on at 1.18-1.2V.
Happier without the noise of fans spinning up to keep a high clock cool or running overkill clocks for browsing the net and non-cpu-critical gaming
And when Turbo kicks in with two cores fully loaded, you get away with 3.84GHz overclock. It's more than enough for most people
I consider 3.6GHz a sweetspot for normal PC users, anything beyond this clock requires some voltage tweaks which are reducing the CPU lifespan.
Trying to get 166.5MHz bclk with Turbo and power savings on. This will give me 3.5GHz clock on four cores and 4GHz on two cores. I can also reduce DRAM voltage to anything below the safe 1.575V and leave LLC off.
Associate
- Joined
- 10 Mar 2010
- Posts
- 783
Does that Real Temp thing work with AMD 955be?
i like how it has the thermal status as i am using Hardware Monitor at the moment
and i was wondering if there is anything better
Permabanned
Yeah it works fine.
Either real temp or core temp will do the cores the best. Google will bring them up in no time for ya
Either real temp or core temp will do the cores the best. Google will bring them up in no time for ya
Associate
- Joined
- 10 Mar 2010
- Posts
- 783
i tired it and got the error about it not be compatible with my CPU???
Heh, I'm personally back to 3.374Ghz / 160x 21 with turbo and speedstep on at 1.18-1.2V.
Happier without the noise of fans spinning up to keep a high clock cool or running overkill clocks for browsing the net and non-cpu-critical gaming
I like your logic. Decided to drop mine for the time being and stress more when the time arises.Doesn't seem to have any effect on my BFBC2 performance. Settled on the below settings. Loving the temps and noise (or lack of)!
Hi,
1st overclock here so have a few questions.
Increased bus speed gradually to 190 (3.8Ghz) testing with IBT (20 runs) each time.
All seems stable and max temp is 65 so not going any higher
I've dropped the memory multiplier down to 8 (1520) and turned off Turbo but everything else is on auto.
I keep reading that leaving Vcore and VTT on auto isn't very sensible so should I be setting these manually (about 1.35/1.21ish respectively?) and re-testing?
CPUZ showing Core Voltage as 1.344 idle and 1.312 under load which seems the wrong way round?!
1st overclock here so have a few questions.
Increased bus speed gradually to 190 (3.8Ghz) testing with IBT (20 runs) each time.
All seems stable and max temp is 65 so not going any higher
I've dropped the memory multiplier down to 8 (1520) and turned off Turbo but everything else is on auto.
I keep reading that leaving Vcore and VTT on auto isn't very sensible so should I be setting these manually (about 1.35/1.21ish respectively?) and re-testing?
CPUZ showing Core Voltage as 1.344 idle and 1.312 under load which seems the wrong way round?!