Corsair Force GT 240GB
This is Corsair’s high-performance series based on the SandForce SF-2281 controller. There is no saving on components here, so the SSD employs synchronous flash memory to deliver maximum speed. The downside of this type of NAND flash is that the cost per gigabyte is as high as $1.7.
The packaging of the Force GT is the same size and shape as that of the Force 3 but colored slightly differently. Moreover, the manufacturer proudly declares the peak speed of the SSD right on the face side of its box.
The box contains the same stuff as we’ve seen with the more affordable Corsair.
To emphasize the high class of the Force GT series, Corsair implements these SSDs in an eye-catching red case.
The PCB of the 240GB Force GT is significantly different from what we saw inside its 120GB cousin tested some time ago. It is somewhat smaller but the number of flash memory chips is identical.
As you may have guessed, that’s because the chips are 128 rather than 64 gigabits in capacity. They are manufactured by Micron. Each chip contains two semiconductor dies, one above the other. This memory has synchronous ONFI 2.2 interface with a data-transfer rate of 166 MT/s. As a matter of fact, the 240GB Corsair Force GT has the same memory specs as the Kingston HyperX, one of the leaders of our previous comparative test. There are four NAND flash devices per each controller channel in this Force GT, so it can use 4-way interleaving, just like its 240GB cousin from the Force 3 series.
The Force GT’s firmware 1.3.3 is based on the latest version of the reference SandForce firmware. Hopefully, SandForce has indeed eliminated all the critical bugs which used to plague SSDs with the SF-2281 controller. The failure rate of Corsair SSDs is rather low at 2.9% (according to European retailer data), yet this number is three times as high as that of Crucial and Intel SSDs. Fueled by forum discussions, this contributes to creating an aura of unreliability about SandForce. Hopefully, SandForce and Corsair will get rid of it, now that they’ve got the problem-free firmware.
Here are the official Corsair Force GT 240GB specs:
- Controller: SandForce SF-2281
- Interface: SATA 6 Gbit/s
- Flash memory: synchronous NAND
- Capacity: 240 gigabytes
- Cache memory: n/a
- Sequential read speed: 555 MB/s
- Sequential write speed: 525 MB/s
- Random write speed (in 4KB data blocks): 85,000 IOPS
Although there are but minor differences from the Force 3 240GB, the GT series features MLC memory which is fast by itself, without relying on the SandForce controller’s compression algorithms. Let’s see how fast it is, exactly.