Another P55 round-up: Asus/Asus/DFI - Page 7

leeghoofd · 23rd December 2009, 19:09

just to prove you wrong

jmke · 23rd December 2009, 20:52

prove me wrong how? seriously not following here?

Massman · 28th December 2009, 10:10

Quote:

For checking the best performance of your SSD hard disk and graphic, you must disable the C- state under bios for your system to run full power not on energy saving.

You cannot do saving power in the meantime running the system at full load.

Please be advise that this event is not only true on Gigabyte motherboard but other brand as well

I wrote this in my first Core i5 article:

Quote:

The PCMark05 benchmark is something different as the system score, which is used in overclocking environments, decreases quite a lot by enabling Turbo mode. Reason of that decrease seems to be the weaker scores in the graphics and hdd subtests, but why they are slower is an unanswered question at this moment. We suspect it has something to do with the way Windows manages the C-states (power saving); as C-states have to be enabled for Turbo mode to work, it may be in conflict with Windows settings. For more info about this oddity check our upcoming motherboard review.

jmke · 28th December 2009, 10:17

if you disable C-state, turbo mode doesn't work; and SSD performs at max
if you enable C-state, you get turbo mode, but SSD speed suffers

+/- correct?

I've read something about power state and SSD performance in the past
edit here: http://www.tomshardware.com/reviews/...ower,2170.html

also on AMD

Quote:

I am using a Phenom II system (790FX with SB750). When I enable C1E in the bios, Crystaldiskmark measures 9MB/s 4k write and the same for 4k read speeds. If I disable C1E, then it goes up to 20MB/s read and 50MB/s write, which is in line with what other people post for the same drive.

Massman · 28th December 2009, 10:25

Re-did testing with C1E and C-states disabled; EIST enabled to get turbo mode enabled.

TURBO DISABLED:

TURBO ENABLED

Major issues are solved by disabling power saving mode. The 4k still isn't performing as it supposed to do ... but oh well.

If you don't change any bios setting, I assume that C states and EIST are enable by default?

Massman · 28th December 2009, 10:26

Quote:

Originally Posted by jmke

if you disable C-state, turbo mode doesn't work; and SSD performs at max
if you enable C-state, you get turbo mode, but SSD speed suffers

For turbo mode, you only need to enable EIST.

jmke · 28th December 2009, 10:28

ok; C-state is enabled by default I think yes
you could try to do a BIOS page reset without saving the changes to see what value it is set at; but I think C-state is enabled by default, it cuts down idle power usage a lot

Massman · 28th December 2009, 10:33

Hm. Not sure how I should classify these results then. On the one hand, the performance problem is easily fixed by disabling major power saving features, but on the other hand, if you disable these power saving features, you can as well, the force the CPU multiplier to the highest value.

Massman · 28th December 2009, 10:38

Retesting last HDD config (c-states disabled turbo mode) as we speak ... results are off.

jmke · 28th December 2009, 10:39

a mixxed bag indeed; has more to do with underlying SATA interface, than with the motherboard; hopefully SATA 6G will solve this

23rd December 2009, 19:09	#61
leeghoofd [M] Reviewer Join Date: Dec 2008 Posts: 3,209	just to prove you wrong __________________

23rd December 2009, 20:52	#62
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 79,021	prove me wrong how? seriously not following here? __________________

28th December 2009, 10:25	#65
Massman [M] Reviewer Join Date: Nov 2004 Location: Waregem Posts: 6,466	Re-did testing with C1E and C-states disabled; EIST enabled to get turbo mode enabled. TURBO DISABLED: TURBO ENABLED Major issues are solved by disabling power saving mode. The 4k still isn't performing as it supposed to do ... but oh well. If you don't change any bios setting, I assume that C states and EIST are enable by default? Attached Thumbnails __________________

28th December 2009, 10:28	#67
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 79,021	ok; C-state is enabled by default I think yes you could try to do a BIOS page reset without saving the changes to see what value it is set at; but I think C-state is enabled by default, it cuts down idle power usage a lot __________________

28th December 2009, 10:33	#68
Massman [M] Reviewer Join Date: Nov 2004 Location: Waregem Posts: 6,466	Hm. Not sure how I should classify these results then. On the one hand, the performance problem is easily fixed by disabling major power saving features, but on the other hand, if you disable these power saving features, you can as well, the force the CPU multiplier to the highest value. __________________

28th December 2009, 10:38	#69
Massman [M] Reviewer Join Date: Nov 2004 Location: Waregem Posts: 6,466	Retesting last HDD config (c-states disabled turbo mode) as we speak ... results are off. __________________

28th December 2009, 10:39	#70
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 79,021	a mixxed bag indeed; has more to do with underlying SATA interface, than with the motherboard; hopefully SATA 6G will solve this __________________

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