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Force GT high cpu usage when downloading?


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Hey, thanks for looking,

tl;dr- Installed win7proX64 12gb xms3 all okay...


So, made the switch to SSD but when I download at a 'fast' rate 1+MB/s either by torrent http rtmp/streaming xdcc or any data medium the CPU gets thrashed, 40-60% and the whole OS falls to pieces and lags out, stutters, locks up, resumes, (never BSOD[touch wood]) and becomes generally unusable. untill the data slows or stops.


I have tested my old HDD and exact same set up, albeit the SSD, in the rig and on the same data transfer rates the cpu is always -10% use, even on speeds of 4+MB/s, where as the SSD will have problems and high CPU usage.


So all process elimination points to the SSD or the OS set up.

The SSD is the OS drive WinXP32 and store data on other platter HDD's



Any ideas would be great thanks.


Firmware 1.3

Marvell 9128

i7 920 @2.6 (hyper threading enabled)

4gb 1600 corsair DDR3 (32bitlulz)


SLI GTX460's


Corsair FORCE GT 120gb SSD (OS drive)

5TB Samsung Spinpoint F3's (STORAGE not RAID)

1000w PSU

fans fans fans

3x 22'' LG flatrons

70/10 fiber



Attatched torrent pic example, but its the same on all data transfer over 1MB/s....





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Go to the processes tab and press CPU. This should order the processes of which one is hogging the CPU resources.


Yeah.... Whichever application is utilising data trasnport is the resource hog.

downloading at 3mb/s on bittorrent, bittorrent is using the cpu.

downloading at 3mb/s on firefox, firefox is thrashing cpu.

streaming, yeah same you get the idea...


this dosent happen on a platter HDD with the same set up and apps, cant understand why it would on a SSD when theay are supposed to be more capable of handling higher bandwidth??


firmware 1.3 sata3.0


When you installed Xp, did you install the Marvel driver found here under the "SATA" section?




Also yes this is what I installed, lis there a different revision I should look for??

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Is that application .net framework 3.0 spesific? im on 4.0 and it has a runtime error........


okay edit-


got it working but cant run the test... thats a stock 920, so im guessing its hyperthreading confusing it??

Anyway it points out the 31k sector offset allignment I'm assuming it should be 64k ??

(even though, on all my other spinpoint f3's it says - pcide- BAD 31k- BAD wtf? didnt think platter 1tb drives had to be 4k offset??



Anyway to repartition without loosing data? or if I copy the partition back after realingment does that undo my alinment?

Is it nessacqarry to format or whats the best way to go about this assuming this is what the test has indicated....


Is the indicated 'slow' write speed what causes the OS to lag when downloading at 'high' rate?

I just tested my storage Samsung F3's and they where getting better write speeds in the 512k sectors.............


thanks for the input its appriciated :D





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You will need to re-align the SSD.


There are many guides that give a small tutorial on how to re-align your SSD by resizing the partition by 1-2 mb.


But i would secure erase and reinstall Windows.


Your data can be placed on the Spinpoint F3 drives.


Also, you might want to consider upgrading your OS to Windows 7.

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Okay so I've been doing some resarch into how im gonna do this operation... but !

I has a fue questions...


Im going to-

1/ boot from another HDD, my old OS winXP.

2/ Format the SSD + make raw

3/ find and run a copy of DISKPAR.exe

4/ make a new partition with the starting offset at 64 (in sectors)

5/ format to ntfs with an 4096 unit allocation size.

6/ install windows xp again.


QUESTIONS I have are- where can I get diskpar.exe ?

I have diskparT.exe but seems to be no official downlaod for diskpar, or can you recomend another utility for correctly partitioning?

I've looked at GParted but it looks long winded and confusing on how i actually set the offset, or it seems i have to work out what size the whole partition should be to equally divide into 4096 sectors? no idea...


what shoud the offset be? is ther an optimal for the 120gb drive? whats min / max??


Diskpar | Size(K)


64 | 32k

128 | 64k

512 | 256k

1024 | 512k

2048 | 1024k


what difference does it make?


How can I actually erase or secure format the data on the drive now?

from what I have read its hard to truly clean the SSD because of the nature of design..

Can you recomend formatting secure erase tools that will actually 0 the drive, or should I not bother as Iv'e only written to 30% of the drive If i format wont it just fill everything with unneeded 0's??



In diskpart would the syntax-

create partition primary [offset=1024] be 1k?

would I have to specify the size= in MB?

is create partition primary [offset=4096] 4k offset and what I want to acheive?


Thanks if you can help with this....



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so after many hours of lulzy align partition fun and reinstalling XP....

MY SSD IS CORRECTLY ALIGNED?! is 1024k offset enough?


BUT... STILL having the lag, stutter when downloading data at speeds of 2mb/s+ via streaming, http or torrent ...

cpu usasge hitting 80-90% solid use on all cores.


Did partedmagic secure erase and diskpart align using a win7 recovery console cmd line.


so im all out of fresh ideas, am I a pioneer in this problem or something?? because I cant find any related info on the webs.


write speeds increased abit, pic related.



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So... after many failed attempts, I give up on XP as much as I love you, your just not designed for the future. :/


Got a coy of Win7ProX64 and 12gb of 1333 XMS3,


RESOLVED all lag stutter so far!!


Although read write speeds are a little down? (after optimizing FAQ)

the access times are faster :D




Thanks for the ideas

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