Q9550 CPU VTT 1.34v Safe?

aquax · Apr 11, 2009

I was able to achieve a stable 4GHz with 1.26v, by upping my CPU VTT to 1.34v and my MCH Core to 1.34v, before I was stable 4GHz with 1.30v but I was using 1.30VTT and 1.30 MCH, what is better 1.26v with 1.34v VTT / 1.34v MCH Core or 1.30v with 1.30v VTT / 1.30v MCH.

4x4n · Apr 11, 2009

I don't know which is actually better, but I would go with a little more vcore with less vtt and mch. The vcore isn't that high, and if your temps are fine, that's the way I'd run it. I know on my board even with 1.3 on the mch it gets pretty warm.

Tau · Apr 11, 2009

aquax said:
I was able to achieve a stable 4GHz with 1.26v, by upping my CPU VTT to 1.34v and my MCH Core to 1.34v, before I was stable 4GHz with 1.30v but I was using 1.30VTT and 1.30 MCH, what is better 1.26v with 1.34v VTT / 1.34v MCH Core or 1.30v with 1.30v VTT / 1.30v MCH.

VTT is a debatable topic, some people suggest to keep it under 1.4, others run upwards of 1.6 without issues.... personally i would keep it under 1.4.

Also you need to adjust your GTL's when you change the VTT. (search for it, there are plenty of posts on it)

cdawall · Apr 11, 2009

i ran 1.8v VTT on 65nm and 45nm i think your safe lol

good oc BTW

aquax · Apr 11, 2009

seems that 1.34vtt is fine, but 1.34v MCH Core is safe too? I don't want the max safe, I want to be in the middle

Homeless · Apr 11, 2009

1.34 mch is safe on that board. I believe the ud3p can handle a max of 1.7v mch on air

Tau · Apr 11, 2009

cdawall said:
i ran 1.8v VTT on 65nm and 45nm i think your safe lol

good oc BTW

For how long?

aquax said:
seems that 1.34vtt is fine, but 1.34v MCH Core is safe too? I don't want the max safe, I want to be in the middle

1.3vNB is fine. I stuff 1.5 through my P45 on a regular basis.

Rock God · Apr 11, 2009

Gotta Prime it though to ensure 100% stability like I have. I have the Q9550 at 4GHz too.

cdawall · Apr 11, 2009

Tau said:
For how long?

2 months then sold the parts and they have worked perfect for him

Tau · Apr 11, 2009

cdawall said:
2 months then sold the parts and they have worked perfect for him

Damnit.... that just brought my greed back.... Because my 9450 will do 500FSB @ 1.36vFSB.... and it went up very nicely when i bumped the vFSB... maybe ill go play with 1.6 :S

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System Name	aquax
Processor	i7 920 4GHz HT ON
Motherboard	Gigabyte EX58-UD4P
Cooling	TRUE120
Memory	6GB TR3X6G1600C7
Video Card(s)	ASUS TOP HD4770
Storage	WD1001FALS / WD6400AAKS
Display(s)	Samsung 2333SW soon
Audio Device(s)	ALC889A
Power Supply	Antec TPQ-850w
Software	Vista Ultimate X64

System Name	All the cores
Processor	2990WX
Motherboard	Asrock X399M
Cooling	CPU-XSPC RayStorm Neo, 2x240mm+360mm, D5PWM+140mL, GPU-2x360mm, 2xbyski, D4+D5+100mL
Memory	4x16GB G.Skill 3600
Video Card(s)	(2) EVGA SC BLACK 1080Ti's
Storage	2x Samsung SM951 512GB, Samsung PM961 512GB
Display(s)	Dell UP2414Q 3840X2160@60hz
Case	Caselabs Mercury S5+pedestal
Audio Device(s)	Fischer HA-02->Fischer FA-002W High edition/FA-003/Jubilate/FA-011 depending on my mood
Power Supply	Seasonic Prime 1200w
Mouse	Thermaltake Theron, Steam controller
Keyboard	Keychron K8
Software	W10P

Q9550 CPU VTT 1.34v Safe?

aquax

New Member

4x4n

Xtreme Refugee

Tau

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cdawall

where the hell are my stars

aquax

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Homeless

Tau

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Rock God

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cdawall

where the hell are my stars

Tau

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