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GeForce GTX 460 1GB vs GeForce GTX 650

Intro

The GeForce GTX 460 1GB comes with a clock speed of 675 MHz and a GDDR5 memory speed of 900 MHz. It also uses a 256-bit memory bus, and makes use of a 40 nm design. It is made up of 336 SPUs, 56 Texture Address Units, and 32 ROPs.

Compare those specs to the GeForce GTX 650, which comes with GPU clock speed of 1058 MHz, and 1024 MB of GDDR5 RAM set to run at 1250 MHz through a 128-bit bus. It also is comprised of 384 Stream Processors, 32 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
GeForce GTX 460 1GB 160 Watts
Difference: 96 Watts (150%)

Memory Bandwidth

The GeForce GTX 460 1GB should theoretically perform a lot faster than the GeForce GTX 650 in general. (explain)

GeForce GTX 460 1GB 115200 MB/sec
GeForce GTX 650 80000 MB/sec
Difference: 35200 (44%)

Texel Rate

The GeForce GTX 460 1GB should be just a bit (more or less 12%) faster with regards to texture filtering than the GeForce GTX 650. (explain)

GeForce GTX 460 1GB 37800 Mtexels/sec
GeForce GTX 650 33856 Mtexels/sec
Difference: 3944 (12%)

Pixel Rate

The GeForce GTX 460 1GB should be much (approximately 28%) better at FSAA than the GeForce GTX 650, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 460 1GB 21600 Mpixels/sec
GeForce GTX 650 16928 Mpixels/sec
Difference: 4672 (28%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

GeForce GTX 460 1GB

GeForce GTX 650

Specifications

Display Specifications

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Model GeForce GTX 460 1GB GeForce GTX 650
Manufacturer nVidia nVidia
Year July 2010 September 2012
Code Name GF104 GK107
Memory 1024 MB 1024 MB
Core Speed 675 MHz 1058 MHz
Memory Speed 3600 MHz 5000 MHz
Power (Max TDP) 160 watts 64 watts
Bandwidth 115200 MB/sec 80000 MB/sec
Texel Rate 37800 Mtexels/sec 33856 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 16928 Mpixels/sec
Unified Shaders 336 384
Texture Mapping Units 56 32
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 1950 million 1300 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.0
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

GeForce GTX 460 1GB

GeForce GTX 650

Comments

3 Responses to “GeForce GTX 460 1GB vs GeForce GTX 650”
J.Galt says:

well gtx460 seem to be best Geforce in his price(at least in my country)

fero says:

and your country ?

J.Galt says:

my country is Ethiopia

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