The SSD Relapse: Understanding and Choosing the Best SSD
by Anand Lal Shimpi on August 30, 2009 12:00 AM EST- Posted in
- Storage
PCMark Vantage: Used Drive Performance
Immediately after finishing my PCMark Vantage runs on the previous page, I wrote one large file sequentially to the rest of the drive. I then deleted the file, rebooted and re-ran PCMark Vantage. This gives us an idea of the worst case desktop performance of these drives as you create, delete and generally just use these drives.
The biggest difference here is that the Samsung based OCZ Summit drops from 5th to 9th place. All of the drives get slower but the Indilinx drives hardly show it. When it comes to dealing with write speed, SLC flash does have the advantage and we see the X25-E and Vertex EX rise to the top of the pack. The G2 is slightly faster than the G1 and the Indilinx drives follow in close pursuit.
The mechanical drives don't change in performance since they don't get slower with use, only as they get more full.
Again we see the two SLC drives at the top, this time followed by a mixture of Indilinx/Intel drives, and the Samsung based Summit is at the bottom of the pack before we get to the HDDs.
The spread in SSD performance here is only 10% between the slowest non-Samsung drive and the fastest. That tells me that we're mostly CPU bound, but the worst performers other than the Samsung drive are the two Intel X25-Ms. That part tells me that we're at least somewhat bound by sequential write speeds. Either way, the Indilinx drives have a good showing here.
Intel followed by Indilinx SLC with Samsung in league with the MLC Indilinx drives. This is an SSD's dream.
Despite the improvements, the G2 can't touch the much lower write latency of SLC flash here. The Indilinx and Intel G1 drives intermingle while the Samsung drive pulls up the rear. All are faster than a regular hard drive of course.
In the multitasking test we once again see Intel rise to the top. The Samsung drive does surprisingly well and the Indilinx drives continue to perform admirably.
The breakdown between SSDs here is almost linear. The X25-E leads the pack, followed by OCZ's SLC drive. The G2 and G1 are next, then a ton of Indilinx MLC drives. The slowest SSD? The Samsung based Summit of course.
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Anand Lal Shimpi - Monday, August 31, 2009 - link
I believe OCZ cut prices to distributors that day, but the retail prices will take time to fall. Once you see X25-M G2s in stock then I'd expect to see the Indilinx drives fall in price. Resellers won't give you a break unless they have to :)Take care,
Anand
bobjones32 - Monday, August 31, 2009 - link
Another great AnandTech article, thanks for the read.Just a head's-up on the 80GB X-25m Gen2 - A day before Newegg finally had them on sale, they bumped their price listing from $230 to $250. They sold at $250 for about 2 hours last Friday, went back out of stock until next week, and bumped the price again from $250 to $280.
So....plain supply vs. demand is driving the price of the G2 roughly $50 higher than it was listed at a week ago. I have a feeling that if you wait a week or two, or shop around a bit, you'll easily find them selling elsewhere for the $230 price they were originally going for.
AbRASiON - Monday, August 31, 2009 - link
Correct, Newegg has gouged the 80gb from 229 to 279 and the 160gb from 449 to 499 :(Stan Zaske - Monday, August 31, 2009 - link
Absolutely first rate article Anand and I thoroughly enjoyed reading it. Get some rest dude! LOLJaramin - Monday, August 31, 2009 - link
I'm wondering, if I were to use a low capacity SSD to install my OS on, but install my programs to a HDD for space reasons, just how much would that spoil the SSD advantage? All OS reads an writes would still be on the SSD, and the paging file would also be there. I'm very curious about the amount of degradation one would see relative to different use routines and apps.Anand Lal Shimpi - Monday, August 31, 2009 - link
Putting all of your apps (especially frequently used ones) off of your SSD would defeat the purpose of an SSD. You'd be missing out on the ultra-fast app launch times.Pick a good SSD and you won't have to worry too much about performance degradation. As long as you don't stick it into a database server :)
Take care,
Anand
swedishchef - Tuesday, September 1, 2009 - link
What if you just put your photoshop cache on a pair of Velociraptors? Would it be the same loss of benefit?I have the same question regarding uncompressed HD video work, where I need write speeds well over the Intel x25-m ( over 240Mb/s). My assumption would be that I could enjoy the fast IO and App. launch of an SSD and increase CPU performance with the SSD while keeping the files on a fast external or internal raid configuration.
Thank you again for a a brilliant Article Anand.
I have been waiting for it for a long time. Yours are the only calm words out on the net.
Grateful Geek /Also professional image creator.
creathir - Monday, August 31, 2009 - link
Great article Anand. I've been waiting for it...My only thoughts are, why can't Intel get their act together with the sequential business? Why can the others handle it, but they can't? To have such an awesome piece of hardware have such a nasty blemish is strange to me, especially on a Gen-2 product.
I suppose there is some technical reason as to why, but it needs to be addressed.
- Creathir
Anand Lal Shimpi - Monday, August 31, 2009 - link
If Intel would only let me do a deep dive on their controller I'd be able to tell you :) There's more I'd like to say but I can't yet unfortunately.Take care,
Anand
shotage - Monday, August 31, 2009 - link
Awesome article!I'm intrigued with the cap on the sequential reads that Intel has on the G2 drives as well. I always thought it was strange to see even on their first gen stuff.
I'm assuming that this cap might be in place to somehow ensure the excellent performance they are giving with random read/writes. All until TRIM finally shows up and you'll have to write up another full on review (which I eagerly await!).
I can't wait to see what 2010 brings to the table. What with the next version of SATA and TRIM just over the horizon, I could finally get the kind of performance out of my PC that I want!!