SATA 3 SSD running on SATA II benchmark
This benchmark and review is to show what performance differences you can expect when you try to run a SATA 3 SSD on older hardware that only supports SATA II (300 Mb/s) connections.
I was recently looking to purchase a SSD drive as an upgrade for my old socket 775 Core 2 Duo machine to keep it alive a bit longer. This meant purchasing a current SATA 3 drive and running it connected via the on-board SATA 2 connection.
When attempting to research whether I needed an add-on SATA 3 card I was unable to find any real world reviews of this type of upgrade, so this review is designed to fill this gap.
The Rig
| Mother Board: | Socket 775, Gigabyte EP45-DS3 |
| CPU: | Core 2 Duo E8400 3.0Ghz, running overclocked @ 4.0Ghz. |
| Memory: | 4GB (2x2GB) Corsair CM2X2048-8500C5C (1066Mhz) |
| Video: | MSi R6850 Storm II 1G OC (R6850 PM2DIGD5) |
| SSD: | Corsair Force GT 120GB, (1.3.3 firmware on SATA II in AHCI mode) |
| ATA Drive: | Segate Barracuda® 7200.12 1 TB |
| OS: | Windows 7 SP1 – 64 bit |
SSD Benchmark
The SSD drive in question is a Corsair Force GT 120GB.
Full specs and details can be found here on guru3D
This is connected via the on board SATA II Connection.
The theoretical throughput is 300Mb/s. The following is the results of AS SSD.
The overall score is comparable with the results from the guru 3d review with the obvious difference being the Sequential Read maxing out at 263Mb/s.
Here is the compression benchmark, so clearly the drive is not being pushed very hard..
OS Benchmark
The machine is running Windows 7 – 64bit, plus all the services and software one would expect, including:
- AVG Anitvirus
- Catalyst control centre
- HP Printer Software
- Msi Afterburner
- Core Temp
- Network and All CPU meter gadgets
The Test
This benchmark recorded the total time to startup the PC on the 7200RPM 1TB drive vs the SSD. The benchmark recorded the time from when windows started loading after the POST screen, until a working desktop was available. This was identified as the time at which the Gadgets appeared on the desktop. This was split into 4 timing points:
- time to login screen
- time to login
- time to see the desktop
- time until the gadgets loaded.
The windows startup time is now 4 times faster with the SSD drive, launching to a working desktop in less than 25 seconds, (including typing my password!)
Windows Experience Score
The windows experience went from…

to..

The slowest component is now my CPU.. may have to tweak that overclock
Edit Caveat: Note you will have to factor in the fact that the SSD benchmark is on a clean install Windows 7 whilst the ATA Drive have been running for a while, but even so I have been using the SSD setup over the past few weeks since writing this review and start up is still very quick with only a few seconds between clicking login and being able to use the computer
Crysis
I timed the loading of the application and the loading of a new game.
With the following results.

The load times were generally faster on the SSD drive and seem to have a larger performance gap as we moved from Crysis to Crysis 2.
Crysis Benchmarks
I ran both the Crysis and Crysis 2 benchmarks with no consistent pattern of improvement. The tests were within 2 fps of each other but in some cases the SSD was better and some worse. So it appears the Disk has no real impact on Crysis frame rates.
General Performance
The general performance of loading applications like Internet Explorer and Firefox, windows media centre was recorded. In most instances the load times on the SSD drive was around the 0.5 – 2.0 seconds, whilst load times on the hard drive were sometimes comparable but more often they were slower (Browsers took approx 4 seconds to load to Google homepage), but the hard drive was inconsistent in performance with load times as high as 14.5 seconds for IE being recorded.
PC Mark – Vantage (1.0.2.0)
To give some kind of industry benchmark for the entire PC experience I benchmarked the machine for overall performance using PC Mark, the results were
Hard Drive Score – 6313
SSD Score – 10683
This is a 70% improvement over the Hard drives score.
Conclusion
The general feal of the machine is much snappier with the SSD drive. Applications install really fast, open quickly and it is a nicer experience to use with no major delays when using the applications. Also I just realised my computer is also eerilly silent on start-up no more mechanical whirring and noises
I would say that it was worth the money even with just an old SATA II connection. Also this drive will be a useful addition to my Laptop at some point in the future
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SATA 3 add-on Cards
The next stage of this benchmark test will be to get my hands on a SATA 3 card like the ASRock SATA 3 card or the ASUS U3S6 and see if these cards actually provide any performance benefit, stay tuned…




excellent review
Will this stata 3ssd work on a laptop with a sata2 port? I know it will lose speed if it works.
I would say, Yes. The drive is a 2.5 inch so it’s the correct form factor to fit in a laptop and yes you would not be using the drive to its full potential but as per my blog you would definitely see improvements in start up times, application launch times which equates to a overall snappier user experience . Let me know how you go with your laptop if you go ahead and buy one.
Awesome review!! There would be so many people in this position right now. I have done exactly what you have done and the result is excellent. It will allow me to keep my current Socket 775 Quad Core system for a while longer. This will enable the prices of the Socket 2011 gear to fall in price for an upgrade later in the year.
Thanks, and if you buy right with your SSD, it will perform even better when you do eventually upgrade to a MotherBoard with SATA III
, win, win..
Awesome. I am about to buy an OCZ vertex 3 and saw your review. It has made me really want to wait for you review on the SATA3 card!
Excellent review, it reminds me of what the web was like 10 years ago! GOOD!
I’m in the throws of getting my hands on a second hand ASUS u3S6, (hopefully in then next 5 days) This is a x4 card which runs a marvell chip for the Sata 3 on pci-e 2.0. I have a spare x8 pci-e 2.0 slot which is use in ATI cross-fire (which I don’t run). So I will hopefully be able slot the U3S6 in there and see how it improves the benchmark, what happens to TRIM support, does running on the PCI-e bus have an impact on the Video card when running Crysis, and the general startup benchmark. watch this space…