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GeForce GTX 460 vs GeForce GTX 650

Intro

The GeForce GTX 460 has a core clock frequency of 675 MHz and a GDDR5 memory frequency of 900 MHz. It also features a 192-bit memory bus, and uses a 40 nm design. It is made up of 336 SPUs, 56 TAUs, and 24 Raster Operation Units.

Compare all of that to the GeForce GTX 650, which has GPU clock speed of 1058 MHz, and 1024 MB of GDDR5 memory set to run at 1250 MHz through a 128-bit bus. It also features 384 SPUs, 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 460 150 Watts
Difference: 86 Watts (134%)

Memory Bandwidth

The GeForce GTX 460, in theory, should perform a small bit faster than the GeForce GTX 650 overall. (explain)

GeForce GTX 460 86400 MB/sec
GeForce GTX 650 80000 MB/sec
Difference: 6400 (8%)

Texel Rate

The GeForce GTX 460 will be a bit (about 12%) better at texture filtering than the GeForce GTX 650. (explain)

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

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 650 is the winner, not by a very large margin though. (explain)

GeForce GTX 650 16928 Mpixels/sec
GeForce GTX 460 16200 Mpixels/sec
Difference: 728 (4%)

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

GeForce GTX 650

Specifications

Display Specifications

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Model GeForce GTX 460 GeForce GTX 650
Manufacturer nVidia nVidia
Year July 2010 September 2012
Code Name GF104 GK107
Memory 768 MB 1024 MB
Core Speed 675 MHz 1058 MHz
Memory Speed 3600 MHz 5000 MHz
Power (Max TDP) 150 watts 64 watts
Bandwidth 86400 MB/sec 80000 MB/sec
Texel Rate 37800 Mtexels/sec 33856 Mtexels/sec
Pixel Rate 16200 Mpixels/sec 16928 Mpixels/sec
Unified Shaders 336 384
Texture Mapping Units 56 32
Render Output Units 24 16
Bus Type GDDR5 GDDR5
Bus Width 192-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 max amount of data (measured in megabytes per second) that can be transported past the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total number of texture units 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 processed in a second.

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

GeForce GTX 460

GeForce GTX 650

Comments

4 Responses to “GeForce GTX 460 vs GeForce GTX 650”
zoe says:

I purchased a GEFORCE GT620 on advice from the shop technician. Performance was dismal. An ATI Radeon HD5670 at the same price gives me a bench mark of 7.1 for graphics and gaming graphics. The old faithful GTX which cost a lot more bechmarks in at 7.6 for both tests. The GT620 comes in at 4 for the Graphics and 5.1 for gaming graphics. The GT620 2GB costs $80 and the GT630 4GB $150.

leland says:

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leland says:

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jesus christ says:

niggas want to play rough?

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