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Geforce GTX 770 vs Radeon HD 7870 XT

Intro

The Geforce GTX 770 comes with a clock frequency of 1046 MHz and a GDDR5 memory speed of 1753 MHz. It also uses a 256-bit memory bus, and uses a 28 nm design. It is comprised of 1536 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Compare those specifications to the Radeon HD 7870 XT, which has GPU core speed of 925 MHz, and 2048 MB of GDDR5 RAM set to run at 1500 MHz through a 256-bit bus. It also is comprised of 1536 Stream Processors, 96 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 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

As far as performance goes, the Geforce GTX 770 should theoretically be a little 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 (approximately 51%) better at texture 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 should be just a bit (about 13%) faster with regards to full screen anti-aliasing than the Radeon HD 7870 XT, and also should be able to handle higher resolutions better. (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: Bandwidth is the largest amount of data (measured in megabytes per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the interface width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is calculated by multiplying the total number 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 a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill 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 reach 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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