Slow SATAII, only in one direction

behindtheneedle

behindtheneedle

behindtheneedle

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Joined
4 Dec 2008
Posts
6
Hi guys,

Basically, I have an 80gb Western Digital drive (used as system drive) and a 1tb Samsung drive (used as storage). Transferring from the Samsung to the WD gives pretty normal SATAII sustained speeds of around about 40mb/s, but transferring from the WD to the Samsung only gives a sustained speed of around 10mb/s?

- Both drives are in DMA mode according to device manager
- Latest chipset/sata controller drivers (NForce 650i SLI)
- Flashed BIOS to latest firmware
- on board sata controller being used (port 1+2 - port 3 has SATA DVD/RW drive)
- SATAII enabled in BIOS for all ports
- Wierdly the vista speed test thing shows both drives as getting a sustained speed of around 70mb/s

Tbh I don't know very much about hdd's but I've checked everything I can think of, is there something I've missed? Is it maybe the difference in the cache size (8mb VS 32mb)?

Any help is much appreciated!
 
rpstewart said:
Are you testing the speeds by copying the same data in each direction?
Click to expand...

Yeah same files, cut and paste a 2gig file from WD>Samsung, cut and paste same 2gig file from Samsung>WD.

I ran hd tune and it's giving weird results, the WD seems fine at around 60mb/s read+write, but the Samsung seems strange at 1500mb/s read+10mb/s write?

WD:
HDTune_File_Benchmark_WDC_WD800A-1.png


Samsung:
HDTune_File_Benchmark_SAMSUNG_HD103.png
 
Yamahahahahaha said:
Are you using Vista perchance?

Edit: It may also be the SATA controller on the board. I don't have any knowledge of 650i chipsets though.
Click to expand...

Yeah vista ultimate (32bit), but the WD is running fine so surely vista isnt the issue?

I've tried swapping the sata ports the drives are pluged into to no avail as well, unless the sata controller just dosnt like drives over a certain capacity
 
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