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GeForce GTX 285 2GB vs Radeon R9 380 2G

Intro

The GeForce GTX 285 2GB makes use of a 55 nm design. nVidia has set the core frequency at 648 MHz. The GDDR3 memory is set to run at a speed of 1242 MHz on this particular model. It features 240 SPUs along with 80 TAUs and 32 Rasterization Operator Units.

Compare all that to the Radeon R9 380 2G, which has core clock speeds of 970 MHz on the GPU, and 1425 MHz on the 2048 MB of GDDR5 memory. It features 1792 SPUs along with 112 Texture Address Units and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 380 2G 190 Watts
GeForce GTX 285 2GB 204 Watts
Difference: 14 Watts (7%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 380 2G should be 15% faster than the GeForce GTX 285 2GB overall, because of its higher bandwidth. (explain)

Radeon R9 380 2G 182400 MB/sec
GeForce GTX 285 2GB 158976 MB/sec
Difference: 23424 (15%)

Texel Rate

The Radeon R9 380 2G should be much (approximately 110%) better at anisotropic filtering than the GeForce GTX 285 2GB. (explain)

Radeon R9 380 2G 108640 Mtexels/sec
GeForce GTX 285 2GB 51840 Mtexels/sec
Difference: 56800 (110%)

Pixel Rate

The Radeon R9 380 2G is a lot (more or less 50%) more effective at AA than the GeForce GTX 285 2GB, and capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon R9 380 2G 31040 Mpixels/sec
GeForce GTX 285 2GB 20736 Mpixels/sec
Difference: 10304 (50%)

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 285 2GB

Amazon.com

Check prices at:

Radeon R9 380 2G

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 GTX 285 2GB Radeon R9 380 2G
Manufacturer nVidia AMD
Year January 15, 2009 June 2015
Code Name G200b Antigua PRO
Memory 2048 MB 2048 MB
Core Speed 648 MHz 970 MHz
Memory Speed 2484 MHz 5700 MHz
Power (Max TDP) 204 watts 190 watts
Bandwidth 158976 MB/sec 182400 MB/sec
Texel Rate 51840 Mtexels/sec 108640 Mtexels/sec
Pixel Rate 20736 Mpixels/sec 31040 Mpixels/sec
Unified Shaders 240 1792
Texture Mapping Units 80 112
Render Output Units 32 32
Bus Type GDDR3 GDDR5
Bus Width 512-bit 256-bit
Fab Process 55 nm 28 nm
Transistors 1400 million 5000 million
Bus PCIe x16 2.0 PCIe 3.0 ×16
DirectX Version DirectX 10 DirectX 12.0
OpenGL Version OpenGL 3.1 OpenGL 4.5

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in MB per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics 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 that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 285 2GB

Amazon.com

Check prices at:

Radeon R9 380 2G

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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