GeForce GT 340 vs GeForce GTX 650

Intro

The GeForce GT 340 makes use of a 40 nm design. nVidia has clocked the core frequency at 550 MHz. The GDDR5 memory works at a frequency of 850 MHz on this particular card. It features 96 SPUs along with 32 Texture Address Units and 8 Rasterization Operator Units.

Compare those specs to the GeForce GTX 650, which features core speeds of 1058 MHz on the GPU, and 1250 MHz on the 2048 MB of GDDR5 RAM. It features 384 SPUs as well as 32 TAUs and 16 ROPs.

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 340 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

GeForce GTX 650 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce GT 340	GeForce GTX 650
Manufacturer	nVidia	nVidia
Year	February 2010	September 2012
Code Name	GT215	GK107
Fab Process	40 nm	28 nm
Bus	PCIe x16	PCIe 3.0 x16
Memory	512 MB	2048 MB
Core Speed	550 MHz	1058 MHz
Shader Speed	1340 MHz	1058 MHz
Memory Speed	850 MHz (3400 MHz effective)	1250 MHz (5000 MHz effective)
Unified Shaders	96	384
Texture Mapping Units	32	32
Render Output Units	8	16
Bus Type	GDDR5	GDDR5
Bus Width	128-bit	128-bit
DirectX Version	DirectX 10.1	DirectX 11.1
OpenGL Version	OpenGL 3.3	OpenGL 4.3
Power (Max TDP)	69 watts	64 watts
Shader Model	4.1	5.0
Bandwidth	54400 MB/sec	80000 MB/sec
Texel Rate	17600 Mtexels/sec	33856 Mtexels/sec
Pixel Rate	4400 Mpixels/sec	16928 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in MB per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.