GeForce GT 440 1.5GB vs GeForce GTX 660

Intro

The GeForce GT 440 1.5GB features a GPU core clock speed of 594 MHz, and the 1536 MB of GDDR3 RAM runs at 900 MHz through a 192-bit bus. It also is made up of 144 Stream Processors, 24 Texture Address Units, and 24 ROPs.

Compare all of that to the GeForce GTX 660, which makes use of a 28 nm design. nVidia has set the core frequency at 980 MHz. The GDDR5 memory runs at a speed of 1502 MHz on this particular model. It features 960 SPUs along with 80 TAUs and 24 Rasterization Operator Units.

Price Comparison

Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.

GeForce GT 440 1.5GB Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

GeForce GTX 660 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce GT 440 1.5GB	GeForce GTX 660
Manufacturer	nVidia	nVidia
Year	October 2010	September 2012
Code Name	GF106	GK106
Fab Process	40 nm	28 nm
Bus	PCIe x16	PCIe 3.0 x16
Memory	1536 MB	2048 MB
Core Speed	594 MHz	980 MHz
Shader Speed	1189 MHz	980 MHz
Memory Speed	900 MHz (1800 MHz effective)	1502 MHz (6008 MHz effective)
Unified Shaders	144	960
Texture Mapping Units	24	80
Render Output Units	24	24
Bus Type	GDDR3	GDDR5
Bus Width	192-bit	192-bit
DirectX Version	DirectX 11	DirectX 11.1
OpenGL Version	OpenGL 4.1	OpenGL 4.3
Power (Max TDP)	56 watts	140 watts
Shader Model	5.0	5.0
Bandwidth	43200 MB/sec	144192 MB/sec
Texel Rate	14256 Mtexels/sec	78400 Mtexels/sec
Pixel Rate	14256 Mpixels/sec	23520 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of MB per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.