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GeForce GT 340 vs Radeon RX 580

Intro

The GeForce GT 340 comes with a GPU core clock speed of 550 MHz, and the 512 MB of GDDR5 memory runs at 850 MHz through a 128-bit bus. It also is made up of 96 SPUs, 32 Texture Address Units, and 8 Raster Operation Units.

Compare those specifications to the Radeon RX 580, which features clock speeds of 1257 MHz on the GPU, and 2000 MHz on the 8192 MB of GDDR5 RAM. It features 2304 SPUs as well as 144 Texture Address Units and 32 ROPs.

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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

Performance-wise, the Radeon RX 580 should theoretically be quite a bit superior to 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 a lot (approximately 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 using a high resolution is important to you, then the Radeon RX 580 is the winner, 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 largest amount of data (measured in MB per second) that can be moved past the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total amount of texture units by the core clock 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 in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max 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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