Gigabyte GeForce GTX 660 Ti
Posted on: 08/15/2012 09:46 AM
Today we are checking out Nvidia’s long awaited GeForce GTX 660 Ti which targets mid-range performance. Based on virtually the same design as the GeForce GTX 670, the GTX 660 Ti should deliver unseen levels of performance to the $300 price range...
The GeForce GTX 660 Ti is an exciting prospect as it shares the same DNA as the GTX 670 and GTX 680 graphics cards. Yet what is really surprising about this new mid-range graphics card is that it boasts the same number of CUDA Cores and Texture Units as GTX 670.
On paper the GeForce GTX 660 Ti looks to be a real weapon and really it shouldn’t be a great deal cheaper than the GTX 670. Nvidia claim to be tackling the Radeon HD 7870 with this graphics card, which suggests a $300 price tag, and if that ends up being true this could spell disaster for AMD. Particularly given we expect to see Radeon HD 7950 levels of performance in a number of games from the GTX 660 Ti.
For this review we will be looking at the Gigabyte GeForce GTX 660 Ti graphics card, model name GV-N66TOC-2GD. This particular card measures 21.5cm long which is quite compact. However due to the large cooler used the actual length of the graphics card is 25.0cm, which is slightly longer than the AMD reference design for the Radeon HD 7870.
As the model name suggests Gigabyte has performed a little factory overclocking, but before we talk clock speeds, let's explore the GTX 660 Ti's GPU in a little more detail. The card ships with 1344 CUDA cores and 7 SMX units, 1 SMX unit and 192 CUDA cores less than the GTX 680 but the same number as the GTX 670. The amount of TAUs is the same as the GTX 670 with 112 in total, while the ROPs have been reduced from 32 to 24.
The memory subsystem has been changed from the GTX 680 and GTX 670 cards which feature four 64-bit controllers for a 256-bit wide bus. The GTX 660 Ti drops one 64-bit controller leaving it with a 192-bit bus. Combine that with 2048MB GDDR5 memory clocked at 1502MHz (6008MHz DDR) and you end up with a bandwidth of 144.2GB/s, which isn’t bad, though it is 33% less than the GTX 670 and that is where the performance difference is found.
Nvidia's specification for the base clock frequency is 915MHz, while the average Boost Clock speed is 980MHz. Gigabyte has increased the base clock frequency to 1032MHz and the boost clock to 1111MHz, while the memory operates at the standard 6008MHz. With that said, let’s move on to see how it performs...
Printed from Legion Hardware (http://www.legionhardware.com/articles_pages/gigabyte_geforce_gtx_660_ti,1.html)