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GeForce GTX 480 vs GeForce GTX 650


Intro

The GeForce GTX 480 features a GPU core clock speed of 700 MHz, and the 1536 MB of GDDR5 RAM is set to run at 924 MHz through a 384-bit bus. It also features 480 SPUs, 60 TAUs, and 48 ROPs.

Compare those specs to the GeForce GTX 650, which features a GPU core clock speed of 1058 MHz, and 1024 MB of GDDR5 memory running at 1250 MHz through a 128-bit bus. It also is made up of 384 SPUs, 32 TAUs, and 16 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 480 3650 points
GeForce GTX 650 2270 points
Difference: 1380 (61%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
GeForce GTX 480 250 Watts
Difference: 186 Watts (291%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 480 will be 122% quicker than the GeForce GTX 650 in general, due to its greater bandwidth. (explain)

GeForce GTX 480 177408 MB/sec
GeForce GTX 650 80000 MB/sec
Difference: 97408 (122%)

Texel Rate

The GeForce GTX 480 should be much (approximately 24%) faster with regards to texture filtering than the GeForce GTX 650. (explain)

GeForce GTX 480 42000 Mtexels/sec
GeForce GTX 650 33856 Mtexels/sec
Difference: 8144 (24%)

Pixel Rate

The GeForce GTX 480 should be quite a bit (about 98%) more effective at anti-aliasing than the GeForce GTX 650, and also should be able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 480 33600 Mpixels/sec
GeForce GTX 650 16928 Mpixels/sec
Difference: 16672 (98%)

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 480

GeForce GTX 650

Specifications

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Model GeForce GTX 480 GeForce GTX 650
Manufacturer nVidia nVidia
Year March 2010 September 2012
Code Name GF100 GK107
Memory 1536 MB 1024 MB
Core Speed 700 MHz 1058 MHz
Memory Speed 3696 MHz 5000 MHz
Power (Max TDP) 250 watts 64 watts
Bandwidth 177408 MB/sec 80000 MB/sec
Texel Rate 42000 Mtexels/sec 33856 Mtexels/sec
Pixel Rate 33600 Mpixels/sec 16928 Mpixels/sec
Unified Shaders 480 384
Texture Mapping Units 60 32
Render Output Units 48 16
Bus Type GDDR5 GDDR5
Bus Width 384-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 3000 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 max 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 card's bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. 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 in one 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 card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour 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 fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

GeForce GTX 480

GeForce GTX 650

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