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GeForce GTX 560 vs Radeon HD 4650 1GB

Intro

The GeForce GTX 560 comes with a GPU core speed of 810 MHz, and the 1024 MB of GDDR5 RAM is set to run at 1001 MHz through a 256-bit bus. It also is made up of 336 SPUs, 56 Texture Address Units, and 32 Raster Operation Units.

Compare all of that to the Radeon HD 4650 1GB, which has a clock frequency of 600 MHz and a GDDR3 memory frequency of 700 MHz. It also makes use of a 128-bit bus, and uses a 55 nm design. It is made up of 320(64x5) SPUs, 32 Texture Address Units, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4650 1GB 55 Watts
GeForce GTX 560 150 Watts
Difference: 95 Watts (173%)

Memory Bandwidth

Performance-wise, the GeForce GTX 560 should theoretically be a lot superior to the Radeon HD 4650 1GB in general. (explain)

GeForce GTX 560 128128 MB/sec
Radeon HD 4650 1GB 22400 MB/sec
Difference: 105728 (472%)

Texel Rate

The GeForce GTX 560 will be a lot (more or less 136%) better at anisotropic filtering than the Radeon HD 4650 1GB. (explain)

GeForce GTX 560 45360 Mtexels/sec
Radeon HD 4650 1GB 19200 Mtexels/sec
Difference: 26160 (136%)

Pixel Rate

The GeForce GTX 560 should be quite a bit (approximately 440%) more effective at anti-aliasing than the Radeon HD 4650 1GB, and capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 560 25920 Mpixels/sec
Radeon HD 4650 1GB 4800 Mpixels/sec
Difference: 21120 (440%)

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 560

Amazon.com

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Radeon HD 4650 1GB

Amazon.com

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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 560 Radeon HD 4650 1GB
Manufacturer nVidia AMD
Year May 2011 Sep 10, 2008
Code Name GF114 RV730 PRO
Memory 1024 MB 1024 MB
Core Speed 810 MHz 600 MHz
Memory Speed 4004 MHz 1400 MHz
Power (Max TDP) 150 watts 55 watts
Bandwidth 128128 MB/sec 22400 MB/sec
Texel Rate 45360 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 25920 Mpixels/sec 4800 Mpixels/sec
Unified Shaders 336 320(64x5)
Texture Mapping Units 56 32
Render Output Units 32 8
Bus Type GDDR5 GDDR3
Bus Width 256-bit 128-bit
Fab Process 40 nm 55 nm
Transistors 1950 million 514 million
Bus PCIe 2.0 x16 PCIe 2.0 x16, AGP 8x
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

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

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the video 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 maximum amount of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce GTX 560

Amazon.com

Check prices at:

Radeon HD 4650 1GB

Amazon.com

Check prices at:

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.

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