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GeForce GT 340 vs Radeon RX 580

Intro

The GeForce GT 340 has a clock frequency of 550 MHz and a GDDR5 memory frequency of 850 MHz. It also uses a 128-bit memory bus, and uses a 40 nm design. It is made up of 96 SPUs, 32 TAUs, and 8 Raster Operation Units.

Compare those specifications to the Radeon RX 580, which has GPU clock speed of 1257 MHz, and 8192 MB of GDDR5 RAM running at 2000 MHz through a 256-bit bus. It also is made up of 2304 Stream Processors, 144 Texture Address Units, and 32 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 69 Watts
Radeon RX 580 185 Watts
Difference: 116 Watts (168%)

Memory Bandwidth

Theoretically, the Radeon RX 580 should be much faster than the GeForce GT 340 overall. (explain)

Radeon RX 580 262144 MB/sec
GeForce GT 340 54400 MB/sec
Difference: 207744 (382%)

Texel Rate

The Radeon RX 580 is much (about 928%) more effective at texture filtering than the GeForce GT 340. (explain)

Radeon RX 580 181008 Mtexels/sec
GeForce GT 340 17600 Mtexels/sec
Difference: 163408 (928%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon RX 580 is superior to the GeForce GT 340, by far. (explain)

Radeon RX 580 40224 Mpixels/sec
GeForce GT 340 4400 Mpixels/sec
Difference: 35824 (814%)

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 340

Amazon.com

Check prices at:

Radeon RX 580

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 340 Radeon RX 580
Manufacturer nVidia AMD
Year February 2010 April 2017
Code Name GT215 Polaris 20
Memory 512 MB 8192 MB
Core Speed 550 MHz 1257 MHz
Memory Speed 3400 MHz 8000 MHz
Power (Max TDP) 69 watts 185 watts
Bandwidth 54400 MB/sec 262144 MB/sec
Texel Rate 17600 Mtexels/sec 181008 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 40224 Mpixels/sec
Unified Shaders 96 2304
Texture Mapping Units 32 144
Render Output Units 8 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 40 nm 14 nm
Transistors 727 million 5700 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 12.0
OpenGL Version OpenGL 3.3 OpenGL 4.5

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. If the card has DDR type memory, it should 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 anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce GT 340

Amazon.com

Check prices at:

Radeon RX 580

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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