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GeForce GTX 650 vs Radeon HD 4350

Intro

The GeForce GTX 650 comes with a GPU clock speed of 1058 MHz, and the 1024 MB of GDDR5 RAM runs at 1250 MHz through a 128-bit bus. It also is comprised of 384 Stream Processors, 32 TAUs, and 16 Raster Operation Units.

Compare all that to the Radeon HD 4350, which features a GPU core clock speed of 575 MHz, and 512 MB of DDR2 memory running at 500 MHz through a 64-bit bus. It also is comprised of 80(16x5) SPUs, 8 Texture Address Units, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4350 22 Watts
GeForce GTX 650 64 Watts
Difference: 42 Watts (191%)

Memory Bandwidth

The GeForce GTX 650 should in theory be a lot faster than the Radeon HD 4350 in general. (explain)

GeForce GTX 650 80000 MB/sec
Radeon HD 4350 8000 MB/sec
Difference: 72000 (900%)

Texel Rate

The GeForce GTX 650 is quite a bit (approximately 636%) faster with regards to AF than the Radeon HD 4350. (explain)

GeForce GTX 650 33856 Mtexels/sec
Radeon HD 4350 4600 Mtexels/sec
Difference: 29256 (636%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 650 is a better choice, by a large margin. (explain)

GeForce GTX 650 16928 Mpixels/sec
Radeon HD 4350 2300 Mpixels/sec
Difference: 14628 (636%)

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 650

Radeon HD 4350

Specifications

Display Specifications

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Model GeForce GTX 650 Radeon HD 4350
Manufacturer nVidia AMD
Year September 2012 Sep 30, 2008
Code Name GK107 RV710
Memory 1024 MB 512 MB
Core Speed 1058 MHz 575 MHz
Memory Speed 5000 MHz 1000 MHz
Power (Max TDP) 64 watts 22 watts
Bandwidth 80000 MB/sec 8000 MB/sec
Texel Rate 33856 Mtexels/sec 4600 Mtexels/sec
Pixel Rate 16928 Mpixels/sec 2300 Mpixels/sec
Unified Shaders 384 80(16x5)
Texture Mapping Units 32 8
Render Output Units 16 4
Bus Type GDDR5 DDR2
Bus Width 128-bit 64-bit
Fab Process 28 nm 55 nm
Transistors 1300 million 242 million
Bus PCIe 3.0 x16 PCIe 2.0 x16, PCI
DirectX Version DirectX 11.0 DirectX 10.1
OpenGL Version OpenGL 4.3 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of data (in units of megabytes per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the interface width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at 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 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 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 rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

GeForce GTX 650

Radeon HD 4350

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