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Geforce GTX 780 vs Radeon R9 270X


Intro

The Geforce GTX 780 has a GPU core speed of 863 MHz, and the 3072 MB of GDDR5 RAM runs at 1502 MHz through a 384-bit bus. It also features 2304 SPUs, 192 TAUs, and 48 ROPs.

Compare that to the Radeon R9 270X, which has a clock speed of 1000 MHz and a GDDR5 memory frequency of 1400 MHz. It also uses a 256-bit bus, and makes use of a 28 nm design. It is comprised of 1280 SPUs, 80 TAUs, and 32 ROPs.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Geforce GTX 780 10067 points
Radeon R9 270X 6560 points
Difference: 3507 (53%)

Ethereum Mining Hash Rate

Geforce GTX 780 20 Mh/s
Radeon R9 270X 18 Mh/s
Difference: 2 (11%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270X 180 Watts
Geforce GTX 780 250 Watts
Difference: 70 Watts (39%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 780 should perform a lot faster than the Radeon R9 270X overall. (explain)

Geforce GTX 780 288384 MB/sec
Radeon R9 270X 179200 MB/sec
Difference: 109184 (61%)

Texel Rate

The Geforce GTX 780 will be quite a bit (more or less 107%) faster with regards to texture filtering than the Radeon R9 270X. (explain)

Geforce GTX 780 165696 Mtexels/sec
Radeon R9 270X 80000 Mtexels/sec
Difference: 85696 (107%)

Pixel Rate

If running with a high resolution is important to you, then the Geforce GTX 780 is superior to the Radeon R9 270X, by a large margin. (explain)

Geforce GTX 780 41424 Mpixels/sec
Radeon R9 270X 32000 Mpixels/sec
Difference: 9424 (29%)

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 780

Amazon.com

Radeon R9 270X

Amazon.com

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 780 Radeon R9 270X
Manufacturer nVidia AMD
Year May 2013 October 2013
Code Name GK110 Curacao XT
Memory 3072 MB 2048 MB
Core Speed 863 MHz 1000 MHz
Memory Speed 6008 MHz 5600 MHz
Power (Max TDP) 250 watts 180 watts
Bandwidth 288384 MB/sec 179200 MB/sec
Texel Rate 165696 Mtexels/sec 80000 Mtexels/sec
Pixel Rate 41424 Mpixels/sec 32000 Mpixels/sec
Unified Shaders 2304 1280
Texture Mapping Units 192 80
Render Output Units 48 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 7080 million 2800 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 11.2
OpenGL Version OpenGL 4.3 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transported across the external memory interface in a second. It's worked out by multiplying the bus width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the 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 number of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, 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 graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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Geforce GTX 780

Amazon.com

Radeon R9 270X

Amazon.com

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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