I noticed that I have done a poor job listing the test system in articles from the first quarter of 2010 and earlier. As a result, here is test configuration:
- CPU: Intel Core i7 920
- Motherboard: Gigabyte X58-Extreme
- Memory: 12GB of Corsair Dominator GT 1600 C7 DDR3
- Case: CoolerMaster Cosmos S
- Drives (OS): 2x OCZ Vertex 120GB in RAID 0
- SSD: 2x Intel X25-V 40GB in RAID 0
- Controller: Intel ICH10R with Intel Rapid Storage Technology (RST) 22.214.171.1244
- NIC (additional): Intel Pro/1000 PT Quad
- Power Supply: Corsair CMPSU-1000HX 1000w Power Supply
- Host OS: Microsoft Windows 7 Ultimate 64-bit
This system is not the fastest around, however it is plenty to ensure that other hardware is not slowing down SSDs. I will note that the numbers I find in my testing may not be indicative of what one may see on an AMD or NVIDIA chipset.
Intel X25-V 40GB Benchmarks
On to the benchmarks! The Intel X25-V in RAID 0 performance is a fairly well known sum at this point, but this should allow one to compare performance to the Patriot PS-100 32GB drives in RAID 0 which is a much cheaper setup (I got both of my PS-100 drives for $140 combined).
I have used CrystalDiskMark (and an older one at that at version 2.2) for quite a while now, and so I am providing these results as a point of reference.
Here one sees Intel’s awesome 4K read/ write speeds shine. Other interesting points are the 88MB/s-89MB/s sequential write speed limit and 358MB/s read speed. The 358MB/s is quite a bit faster than a single SATA II channel can handle so it is fair to say that sequential reads of two Intel X25-V’s in RAID 0 will surpass other SATA II drives.
ATTO has been one of my longstanding favorite benchmarks as it usually gives a different view of drive performance than a lot of the other quick benchmarks available.
The ATTO benchmark shows two trends that really highlight the difference between Indilinx and Intel drives in RAID 0. The X25-V’s are hamstrung by their maximum write performance of about 44MB/s – 45MB/s each. In RAID 0, this translates to a wall between 88MB/s and 89MB/s. This 88MB/s – 89MB/s is the same sequential write limit that was seen in CrystalDiskMark.
Read speeds end up at a decent 380MB/s – 390MB/s. On the other hand, one can see that for a broad spectrum of write sizes, the OCZ-Indilinx drives in RAID 0 perform well also. The Intel X25-V 40GB drives in RAID 0 show an aptitude between .5KB and 2KB (especially for writes), but beyond that the OCZ-Indilinx drives show solid performance. It should, of course, be noted that the OCZ-Indilinx setup has three times the capacity of the Intel setup and was two and a half times more expensive. Just for reference, the OCZ Vertex 120GB drives in RAID 0 ATTO numbers are provided below:
That is quite a difference, but real world, it is not very noticeable except when copying large files to the Intel array.
AS ASSD Benchmark
The AS ASSD Benchmark was developed specifically to test SSDs. I have not included it on previous reviews, but I plan to going forward.
This again is a good result. The sequential write speed lags, but is still about twice that of a single Intel X25-V 40GB and approximately on par with an Intel X25-M 80GB. The sequential write speed was 82.4MB/s with the AS ASSD Benchmark which is slower but in the same ballpark as the CrystalDiskMark and ATTO benchmark result. The 4K and 4K-64 Thrd read results really point to the strength of Intel’s controller architecture.
The X25-V 40GB drives in RAID 0 do provide a strong value proposition. The comparison to the OCZ Vertex 120GB drives in RAID 0 shows that the Intel drives give up some write speed on larger files for small read/ write speed. One area where Intel lags Indilinx is garbage collection and TRIM in the same firmware. That means that TRIM enabled Intel X25-V 40GB drives in RAID 0 do not have the ability to efficiently recapture abandoned space. Then again, for under $250, the dual X25-V 40GB combination provides impressive performance. Unlike the Indilinx RAID 0 results, moving the X25-V did produce some noticeable performance benefits mostly when doing sequential writes (i.e. transferring a file from a network location to the 2x Intel X25-V 40GB RAID 0 array).