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Geforce GTX 770 vs Radeon HD 7870 XT

Intro

The Geforce GTX 770 features a GPU core clock speed of 1046 MHz, and the 2048 MB of GDDR5 RAM is set to run at 1753 MHz through a 256-bit bus. It also features 1536 Stream Processors, 128 TAUs, and 32 Raster Operation Units.

Compare that to the Radeon HD 7870 XT, which makes use of a 28 nm design. AMD has clocked the core speed at 925 MHz. The GDDR5 memory runs at a speed of 1500 MHz on this particular model. It features 1536 SPUs as well as 96 Texture Address Units and 32 Rasterization Operator Units.

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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 770 7854 points
Radeon HD 7870 XT 6390 points
Difference: 1464 (23%)

Ethereum Mining Hash Rate

Radeon HD 7870 XT 15 Mh/s
Geforce GTX 770 14 Mh/s
Difference: 1 (7%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870 XT 185 Watts
Geforce GTX 770 230 Watts
Difference: 45 Watts (24%)

Memory Bandwidth

Performance-wise, the Geforce GTX 770 should theoretically be a small bit superior to the Radeon HD 7870 XT overall. (explain)

Geforce GTX 770 224384 MB/sec
Radeon HD 7870 XT 192000 MB/sec
Difference: 32384 (17%)

Texel Rate

The Geforce GTX 770 should be much (about 51%) more effective at anisotropic filtering than the Radeon HD 7870 XT. (explain)

Geforce GTX 770 133888 Mtexels/sec
Radeon HD 7870 XT 88800 Mtexels/sec
Difference: 45088 (51%)

Pixel Rate

The Geforce GTX 770 will be a little bit (approximately 13%) better at FSAA than the Radeon HD 7870 XT, and also able to handle higher screen resolutions while still performing well. (explain)

Geforce GTX 770 33472 Mpixels/sec
Radeon HD 7870 XT 29600 Mpixels/sec
Difference: 3872 (13%)

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 770

Amazon.com

Check prices at:

Radeon HD 7870 XT

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 770 Radeon HD 7870 XT
Manufacturer nVidia AMD
Year May 2013 November 2012
Code Name GK104 Tahiti LE
Memory 2048 MB 2048 MB
Core Speed 1046 MHz 925 MHz
Memory Speed 7012 MHz 6000 MHz
Power (Max TDP) 230 watts 185 watts
Bandwidth 224384 MB/sec 192000 MB/sec
Texel Rate 133888 Mtexels/sec 88800 Mtexels/sec
Pixel Rate 33472 Mpixels/sec 29600 Mpixels/sec
Unified Shaders 1536 1536
Texture Mapping Units 128 96
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 3540 million 4313 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 11.1
OpenGL Version OpenGL 4.3 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of megabytes per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated 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 drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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Geforce GTX 770

Amazon.com

Check prices at:

Radeon HD 7870 XT

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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