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GeForce GTX 460 1GB vs GeForce GTX 650

Intro

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

Compare that to the GeForce GTX 650, which makes use of a 28 nm design. nVidia has clocked the core frequency at 1058 MHz. The GDDR5 memory is set to run at a speed of 1250 MHz on this specific model. It features 384 SPUs along with 32 Texture Address Units and 16 ROPs.

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

In theory, the GeForce GTX 460 1GB should be quite a bit faster than the GeForce GTX 650 overall. (explain)

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

Texel Rate

The GeForce GTX 460 1GB will be just a bit (about 12%) faster with regards to anisotropic 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

If running with a high resolution is important to you, then the GeForce GTX 460 1GB is superior to the GeForce GTX 650, and very much so. (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

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GeForce GTX 460 1GB

Amazon.com

GeForce GTX 650

Amazon.com

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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 2048 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: Bandwidth is the largest amount of data (in units of MB per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics 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 most pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines 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 fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

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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