Slightly below average speeds from an M4 128gb

Muel

Muel

Muel

Soldato
Joined
26 Jun 2009
Posts
3,023
Location
Sheffield
Hello all,

I received my 128gb Crucial M4 yesterday, and it's very nice. Got it working last night with no issues to speak of, and I'm very happy with it.

The only thing bugging me is that the benchmark tool I used (AS SSD) reports that it's performing at only 190mbps write and 485mbps read. Somewhat below the 270mbps write and 550mbps read that was advertised.

It's on the latest firmware, fresh install of windows AHCI enable etc.

The only thing I can think of is that the SATA cable is just one I had kicking around. Maybe it requires a SATA3 specific one? Or maybe it's a decent speed and I need not worry?
 
The cables are all the same. Have you confirmed it can reach higher speeds on your platform? All the higher benchmarks I've seen have been on Intel boards, it's possible your AMD chipset just doesn't go quite as fast.
 
Sounds about right. The qouted speeds are in ideal conditions.

If you look at the M4 thread everyone is around 480-500MB read, 170-200 write. :)

Here's mine:

2vdi5hj.png


http://forums.overclockers.co.uk/showthread.php?t=18392363
 
Well that's a bit of a **** take. They're almost identical to above so clearly nothing wrong.

I bought this drive because it was popular but almost didn't because of the low write speed compared to a Vertex 4.

Just got 177mbps write speed, which is ~33% slower than advertised. Excellent.
 
Naturally, advertised speeds are going to be on specifically designed computers, with different hardware that gives them that one-time number that they can advertise. Unfortunately, it's just not the same as most of us get :(
 
Muel said:
Well that's a bit of a **** take. They're almost identical to above so clearly nothing wrong.

I bought this drive because it was popular but almost didn't because of the low write speed compared to a Vertex 4.

Just got 177mbps write speed, which is ~33% slower than advertised. Excellent.
Click to expand...

Those write speeds on Vertex 4's are achieved through compression. If the data can't be compressed it won't be any faster than the M4. Plus with SSD's write speed is a non-issue, it's read speeds you are bothered about. :)
 
Muel said:
The only thing bugging me is that the benchmark tool I used (AS SSD) reports that it's performing at only 190mbps write and 485mbps read. Somewhat below the 270mbps write and 550mbps read that was advertised.
Click to expand...

Isn't the write speed for the 128GB drive advertised as up to 220MB/s?
 
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