C3/C6 state support

[h3sham]

a while back i enabled c3/c6 support.....no idea why i did it so dun ask! anyway,whats the point of that option i mean ....what does it do also ive read on countless posts that it should be enabled with trubo boost,but a friend told me its glitched somehow on gigabyte mobos...can anyone explain the c3/c6 state support and wether or not i should i enable it ? and is it realy glitched some how on the gigabyte mobos and slows down everything? thanks alot in advance
my system specs...
Intel Core i5 650
Windows 7 Ultimate Edition 64-bit SP1 (Build 7601)
CPU Arch : 1 CPU - 2 Cores - 4 Threads
CPU PSN : Intel Core i5 CPU 650 @ 3.20GHz
CPU EXT : MMX, SSE (1, 2, 3, 3S, 4.1, 4.2), EM64T, VT-x, AES
CPUID : 6.5.5 / Extended : 6.25
CPU Cache : L1 : 2 x 32 / 2 x 32 KB - L2 : 2 x 256 KB
CPU Cache : L3 : 4096 KB
Core : Clarkdale (32 nm) / Stepping : K0
Freq : 1199.12 MHz (133.24 * 9)
MB Brand : Gigabyte
MB Model : P55-USB3L
NB : Intel Havendale/Clarkdale Host Bridge re
SB : Intel P55 rev 06
GPU Type : NVIDIA GeForce GTS 450
GPU Clocks : Core 882 MHz / RAM 1900 MHz
DirectX Version : 11.0
RAM : 12288 MB DDR3 Dual Channel
RAM Speed : 666.2 MHz (4:20) @ 9-9-9-24
Slot 1 : 2048MB (10700)
Slot 1 Manufacturer : A-Data Technology
Slot 2 : 2048MB (10700)
Slot 2 Manufacturer : A-Data Technology
Slot 3 : 4096MB (10700)
Slot 3 Manufacturer : Team Group Inc.
Slot 4 : 4096MB (10700)
Slot 4 Manufacturer : Team Group Inc.

 

[h3sham]

any ideas?

 

[jaquith]

There are only a few reasons to Disable any C-States: 1. Overclocking (Enabled is to prevent Vdroop dropouts but not a problem if the clock speed is fixed) or 2. The CPU needs to be in a full power mode 24/7, or others etc.

As far as 'glitches' IDK maybe the Gigabyte's power management is poorly done or monitored by the BIOS and is causing some issues. Often a BIOS update helps 'System Stability' updates.

Bottom-line, the best (usable) OC's have all of the C-States Enabled versus the (useless / bench ) OC's where all of the C-States are Disabled with the CPU at a fixed clock.

See CPU Power states - http://en.wikipedia.org/wiki/Advanced_Configuration_and_Power_Interface#Processor_states and http://www.intel.com/support/processors/sb/cs-028739.htm and a white paper on C-States http://download.intel.com/design/processor/applnots/320354.pdf?iid=tech_tb+paper

 

[h3sham]

disable turbo boot but and yes have the other settings enabled..
they are power saving features.

no that glitch about Giggle-Byte, never heard of that nonsense.
I have had Giggles AMD and Intel and overclocked on both.

Why disable the turbo boost?

 

[h3sham]

might deem your clock unstable if you go for a higher overclock.
it's unpredictable and when you think your stable and gaming or benching it kicks in and blue screen or freeze.

not planing on over clockin it...kinda pointless since im already building another i7 rig

 

[h3sham]

in this case it is since all it will do is cost me more money and i wont be using it for anything other than downloading and watching movies and playin some old games which the computer atm is kinda an overkill for

 

[h3sham]

Best answer selected by h3sham.

 

[jaquith]

Fully usable OC with ALL C-States Enabled, my CPU runs from 1.2GHz to 4.8GHz, and it sleeps/wakes and performs like 'Stock' but faster - http://valid.canardpc.com/show_oc.php?id=2320509 Some of my SQL compile testing can take 20 minutes to a few hours so a reduction of 20%~50% with a few settings of the BIOS is well worth the efforts. However, if I'm not going to be needing OC then I can simply boot to the BIOS and within 45 seconds be running Stock or OC; BIOS Profiles. None of my OC's has C-States Disabled.

RamDisk 11 'RamDisk Plus' (SQL) - http://i1013.photobucket.com/albums/af254/Jaquith/RamDisk-Testing-X79.jpg

Cinebench (Rendering Video) - http://i1013.photobucket.com/albums/af254/Jaquith/CB-i7-3939K-Stock-v-OC.jpg

 

[h3sham]

Fully usable OC with ALL C-States Enabled, my CPU runs from 1.2GHz to 4.8GHz, and it sleeps/wakes and performs like 'Stock' but faster - http://valid.canardpc.com/show_oc.php?id=2320509

RamDisk 11 'RamDisk Plus' (SQL) - http://i1013.photobucket.com/albums/af254/Jaquith/RamDisk-Testing-X79.jpg

Cinebench (Rendering Video) - http://i1013.photobucket.com/albums/af254/Jaquith/CB-i7-3939K-Stock-v-OC.jpg

if i did try to oc would i have to change the stock cooler?

 

[h3sham]

so now your thinking about overclocking the new rig huh.?
change of mind I see or giving it some thought...

that's funny.

if i can i push it a lil bit without having to change any of my components i will if i'll have to get a new cooler i like it the way it is

 

[jaquith]

if i did try to oc would i have to change the stock cooler?

It all depends on the heat, anything above ~4GHz you need an aftermarket HSF. For the $ to Performance the $20 CM Hyper 212 Plus is the best or $35 CM Hyper 212 EVO.

IMO $20 if nothing more than just to mess around is worth the small price, and in the meantime IF your work, mine does, justifies OC'ing then use the OC Profile when needed. The worst case is your CPU will run cooler and last a little longer.

 

[h3sham]

cool thanks

 

[Agiel]

i have an i5 3570K with a B75M (i know kinda poor for this monster) and im wondering if i must disable C3/C6 State and CPU Enhanced Hatl 'coz i want my i5 to run at 3.40 to 3.8 with boost, but i never get the fully 3800Mhz the max i cant get is 3790Mhz ... why is that ? i also have Corsair Vengeace 1600Mhz and CPU-Z says i have it at 798.1Mhz instead of 800Mhz

My specs are:
GA-B75M-HD3
Core i5 3570K
Corsair Vengeance 1600Mhz
xfx HD7850 1GB Ghost Thermal Core Edition
Thermalthake TR2 600W 24/32 Amp 12v
Asus VE228 1080p

 

[Agiel]

come on, no one ??? need help here ... !!!

 

[h3sham]

sorry for the late reply but i think u r better off starting a new thread for this cuz im no so sure what needs to be done without testing it my self xD