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GeForce GT 420 vs Radeon HD 5750 1GB

Intro

The GeForce GT 420 has core speeds of 700 MHz on the GPU, and 900 MHz on the 2048 MB of GDDR3 RAM. It features 48 SPUs along with 8 Texture Address Units and 4 Rasterization Operator Units.

Compare all that to the Radeon HD 5750 1GB, which has GPU core speed of 700 MHz, and 1024 MB of GDDR5 RAM set to run at 1150 MHz through a 128-bit bus. It also is comprised of 720(144x5) Stream Processors, 36 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 420 50 Watts
Radeon HD 5750 1GB 86 Watts
Difference: 36 Watts (72%)

Memory Bandwidth

In theory, the Radeon HD 5750 1GB should be quite a bit faster than the GeForce GT 420 overall. (explain)

Radeon HD 5750 1GB 73600 MB/sec
GeForce GT 420 28800 MB/sec
Difference: 44800 (156%)

Texel Rate

The Radeon HD 5750 1GB will be quite a bit (about 350%) better at texture filtering than the GeForce GT 420. (explain)

Radeon HD 5750 1GB 25200 Mtexels/sec
GeForce GT 420 5600 Mtexels/sec
Difference: 19600 (350%)

Pixel Rate

The Radeon HD 5750 1GB will be quite a bit (about 300%) more effective at full screen anti-aliasing than the GeForce GT 420, and also will be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 5750 1GB 11200 Mpixels/sec
GeForce GT 420 2800 Mpixels/sec
Difference: 8400 (300%)

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 GT 420

Amazon.com

Check prices at:

Radeon HD 5750 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.

Specifications

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Model GeForce GT 420 Radeon HD 5750 1GB
Manufacturer nVidia AMD
Year September 2010 October 13, 2009
Code Name GF108 Juniper LE
Memory 2048 MB 1024 MB
Core Speed 700 MHz 700 MHz
Memory Speed 1800 MHz 4600 MHz
Power (Max TDP) 50 watts 86 watts
Bandwidth 28800 MB/sec 73600 MB/sec
Texel Rate 5600 Mtexels/sec 25200 Mtexels/sec
Pixel Rate 2800 Mpixels/sec 11200 Mpixels/sec
Unified Shaders 48 720(144x5)
Texture Mapping Units 8 36
Render Output Units 4 16
Bus Type GDDR3 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 585 million 1040 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 3.2

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in MB per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the interface width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GT 420

Amazon.com

Check prices at:

Radeon HD 5750 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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