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Geforce GTX 780 vs Radeon R9 270X


Intro

The Geforce GTX 780 uses a 28 nm design. nVidia has set the core frequency at 863 MHz. The GDDR5 RAM runs at a frequency of 1502 MHz on this particular model. It features 2304 SPUs along with 192 Texture Address Units and 48 Rasterization Operator Units.

Compare all of that to the Radeon R9 270X, which features a GPU core clock speed of 1000 MHz, and 2048 MB of GDDR5 memory set to run at 1400 MHz through a 256-bit bus. It also features 1280 Stream Processors, 80 Texture Address Units, and 32 ROPs.

Display Graphs

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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

In theory, the Geforce GTX 780 should be quite a bit faster than the Radeon R9 270X in general. (explain)

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

Texel Rate

The Geforce GTX 780 should be quite a bit (about 107%) faster with regards to AF than the Radeon R9 270X. (explain)

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

Pixel Rate

The Geforce GTX 780 is quite a bit (about 29%) more effective at AA than the Radeon R9 270X, and will be able to handle higher resolutions without losing too much performance. (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: Bandwidth is the largest amount of information (measured in MB per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 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 anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max 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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