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Another P55 round-up: Asus/Asus/DFI
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Old 23rd December 2009, 19:09   #61
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just to prove you wrong
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Old 23rd December 2009, 20:52   #62
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prove me wrong how? seriously not following here?
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Old 28th December 2009, 10:10   #63
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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:

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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.
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Old 28th December 2009, 10:17   #64
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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

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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.
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Old 28th December 2009, 10:25   #65
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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?
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Old 28th December 2009, 10:26   #66
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Originally Posted by jmke View Post
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.
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Old 28th December 2009, 10:28   #67
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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
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Old 28th December 2009, 10:33   #68
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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.
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Old 28th December 2009, 10:38   #69
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Retesting last HDD config (c-states disabled turbo mode) as we speak ... results are off.
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Old 28th December 2009, 10:39   #70
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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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