Intel's X25-V & Kingston's 30GB SSDNow V Series: Battle of the $125 SSDs
by Anand Lal Shimpi on March 19, 2010 12:00 AM EST- Posted in
- Storage
A Comparison of Spare Area
All SSDs set aside some percentage of their flash for recycling and bad block allocation. The portion set aside isn't user addressable and is often referred to as Spare Area. Most consumer MLC drives have about 7% of their total flash capacity reserved for use as spare area. Intel's X25-V is no different. The table below shows the available space vs. total NAND capacity on the drive for both the Intel and Kingston drives:
| Drive | Formatted Capacity | NAND Flash | Spare Area % |
| Intel X25-V | 37.27GB | 40.0GB | 6.8% |
| Kingston SSDNow V Series Boot Drive | 27.95GB | 32.0GB | 12.65% |
Intel's X25-V actually has the same percentage of spare area as the X25-M. It's the SSDNow V Series that is a bit perplexing. Formatted capacity for the "30GB" drive is 27.95GB. Given that NAND devices, like all memory, are made in powers of 2 there has to be 32GB of NAND on the drive. Either the Toshiba controller is using over 12% of the total NAND capacity as spare area, or there's only 30GB of usable flash on the drive. The latter could be true if the NAND devices had some existing bad blocks on them.
Either way, the X25-V basically delivers an extra 10GB at the same price point as the 30GB Kingston SSDNow V Series Boot Drive.
The Test
| CPU | Intel Core i7 965 running at 3.2GHz (Turbo & EIST Disabled) |
| Motherboard: | Intel DX58SO (Intel X58) |
| Chipset: | Intel X58 + Marvell SATA 6Gbps PCIe |
| Chipset Drivers: | Intel 9.1.1.1015 + Intel IMSM 8.9 |
| Memory: | Qimonda DDR3-1333 4 x 1GB (7-7-7-20) |
| Video Card: | eVGA GeForce GTX 285 |
| Video Drivers: | NVIDIA ForceWare 190.38 64-bit |
| Desktop Resolution: | 1920 x 1200 |
| OS: | Windows 7 x64 |
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Taft12 - Saturday, March 20, 2010 - link
The pricing changes every couple of minutes, what do you want?UPDATE 13: Zipzoomfly now has the Kingston drive for $84.77 beating Newegg's $84.99
hybrid2d4x4 - Friday, March 19, 2010 - link
Anand, in future SSD reviews, can you bring back the power consumption figures? Or maybe dedicate a short article that sums up the current lineup? I remember an article on Tom's which showed a huge amount of variance among 1st gen SSDs (with some being worse than "green" 3.5" HDDs) and am wondering how the current ones are versus a 2.5" laptop drive (ie: what impact a SSD swap will have on battery life).7Enigma - Saturday, March 20, 2010 - link
Agreed. I would be interested to see these figures as well. Doesn't really matter for a desktop setting but for a laptop replacement/upgrade it can be helpful.qwertymac93 - Friday, March 19, 2010 - link
so what your saying is...sandforce wins! Im kidding of course, but i think 30 gigs is too small, and the intel 40gig is too slow. too bad a 50 gig sandforce costs $250! o_Ompx - Friday, March 19, 2010 - link
If I had a small SSD, then I'd definitely use it as a cache, rather than as a boot drive. There are 2 popular solutions: ReadyBoost integrated in Windows 7, which supports up to 32GB of storage, matching these drives. There's also external program called ReadyBoost that can work with Window XP or Windows Server version.Nomgle - Wednesday, March 24, 2010 - link
ReadyBoost only caches Reads, and would be utterly useless in this scenario.As noted in the article, the "correct" way to use a small SSD is to install your OS directly onto it - use an additional mechanical drive as your main data store.
rivethead - Friday, March 19, 2010 - link
I guess I consider myself lucky that I purchased a Kingston SSDNow 40GB drive from Buy.com for $89. This was just eight weeks ago.A few hours of research and tweaking and a few aspirin later I was able to upgrade the firmware to the Intel firmware and enable TRIM.
So a big middle finger to you Intel.
Drakino - Friday, March 19, 2010 - link
Does the Intel drive adhere to connector location for 3.5 inch drives when mounted in the bracket? IE, can I toss the 2.5 inch drive onto the bracket, then mount the bracket in the drive carriers of a Mac Pro and plug it in?Western Digital failed this test with their initial release of the Velociraptor, only later coming out with a "Hot swappable" 3.5 inch form factor drive that adhered to SATA standards.
somedude1234 - Sunday, March 21, 2010 - link
I've been looking for a similar solution. Two similar items:Addonics Snap-In 25
Icy Dock MB882SP-1S-1B
Unfortunately, it looks like both of them use a separate PCB, which could possibly lead to connection problems.
I was looking for a dead-simple bracket that would offset the 2.5" drive to the proper location within a 3.5" drive space. The only candidate I've found so far is this:
Supermicro MCP-220-00043-0N
The pictures all show the complete Supermicro 3.5" hotswap carrier, including the metal bracket which properly places the 2.5" drive in the 3.5" drive space. It looks like the bracket is screw-mounted within the 3.5" carrier. I suspect that the MCP-220-00043-0N model number is actually for only the metal bracket and that the 3.5" hotswap carrier is simply shown for illustration. However, it's possible that they include both the bracket and the carrier. In that case, you could just remove the bracket and toss the carrier.
Nomgle - Wednesday, March 24, 2010 - link
The Icy Dock MB882SP-1S-2B and MB882SP-1S-1B work just fine to convert a 2.5" drive to a 3.5" form-factor, whilst keeping the SATA connectors in the right place -http://www.icydock.com/product/mb882sp-1s-2b.html">http://www.icydock.com/product/mb882sp-1s-2b.html and http://www.icydock.com/product/mb882sp-1s-1.html">http://www.icydock.com/product/mb882sp-1s-1.html