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GeForce GTX 460 1GB vs GeForce GTX 650

Intro

The GeForce GTX 460 1GB has a clock frequency of 675 MHz and a GDDR5 memory speed of 900 MHz. It also features a 256-bit bus, and uses a 40 nm design. It features 336 SPUs, 56 Texture Address Units, and 32 Raster Operation Units.

Compare those specs to the GeForce GTX 650, which comes with core speeds of 1058 MHz on the GPU, and 1250 MHz on the 2048 MB of GDDR5 RAM. It features 384 SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

(No game benchmarks for this combination yet.)

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

Theoretically speaking, the GeForce GTX 460 1GB should be quite a bit 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 is a bit (about 12%) more effective at 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 using high levels of AA is important to you, then the GeForce GTX 460 1GB is the winner, 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

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

Model GeForce GTX 460 1GB GeForce GTX 650
Manufacturer nVidia nVidia
Year July 2010 September 2012
Code Name GF104 GK107
Fab Process 40 nm 28 nm
Bus PCIe x16 PCIe 3.0 x16
Memory 1024 MB 2048 MB
Core Speed 675 MHz 1058 MHz
Shader Speed 1350 MHz 1058 MHz
Memory Speed 900 MHz (3600 MHz effective) 1250 MHz (5000 MHz effective)
Unified Shaders 336 384
Texture Mapping Units 56 32
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
DirectX Version DirectX 11 DirectX 11.0
OpenGL Version OpenGL 4.1 OpenGL 4.3
Power (Max TDP) 160 watts 64 watts
Shader Model 5.0 5.0
Bandwidth 115200 MB/sec 80000 MB/sec
Texel Rate 37800 Mtexels/sec 33856 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 16928 Mpixels/sec

Memory Bandwidth: Bandwidth is the largest amount of data (measured in megabytes per second) that can be transferred over the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, 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 most pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Comments

2 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 ?

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