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GeForce GTX 970 vs Geforce GTX 770

Intro

The GeForce GTX 970 has a clock frequency of 1050 MHz and a GDDR5 memory frequency of 1750 MHz. It also makes use of a 256-bit memory bus, and uses a 28 nm design. It is comprised of 1664 SPUs, 104 TAUs, and 64 Raster Operation Units.

Compare those specifications to the Geforce GTX 770, which features a core clock frequency of 1046 MHz and a GDDR5 memory frequency of 1753 MHz. It also makes use of a 256-bit memory bus, and makes use of a 28 nm design. It features 1536 SPUs, 128 TAUs, and 32 Raster Operation Units.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970 145 Watts
Geforce GTX 770 230 Watts
Difference: 85 Watts (59%)

Memory Bandwidth

In theory, the Geforce GTX 770 will be 0% quicker than the GeForce GTX 970 in general, due to its greater data rate. (explain)

Geforce GTX 770 224384 MB/sec
GeForce GTX 970 224000 MB/sec
Difference: 384 (0%)

Texel Rate

The Geforce GTX 770 should be much (approximately 23%) more effective at AF than the GeForce GTX 970. (explain)

Geforce GTX 770 133888 Mtexels/sec
GeForce GTX 970 109200 Mtexels/sec
Difference: 24688 (23%)

Pixel Rate

The GeForce GTX 970 will be much (about 101%) faster with regards to full screen anti-aliasing than the Geforce GTX 770, and also will be capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 970 67200 Mpixels/sec
Geforce GTX 770 33472 Mpixels/sec
Difference: 33728 (101%)

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

GeForce GTX 970

Amazon.com

Geforce GTX 770

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

Model GeForce GTX 970 Geforce GTX 770
Manufacturer nVidia nVidia
Year September 2014 May 2013
Code Name GM204-200 GK104
Fab Process 28 nm 28 nm
Bus PCIe 3.0 x16 PCIe 3.0 x16
Memory 4096 MB 2048 MB
Core Speed 1050 MHz 1046 MHz
Shader Speed N/A MHz 1046 MHz
Memory Speed 1750 MHz (7000 MHz effective) 1753 MHz (7012 MHz effective)
Unified Shaders 1664 1536
Texture Mapping Units 104 128
Render Output Units 64 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
DirectX Version DirectX 11.2 DirectX 11.0
OpenGL Version OpenGL 4.5 OpenGL 4.3
Power (Max TDP) 145 watts 230 watts
Shader Model 5.0 5.0
Bandwidth 224000 MB/sec 224384 MB/sec
Texel Rate 109200 Mtexels/sec 133888 Mtexels/sec
Pixel Rate 67200 Mpixels/sec 33472 Mpixels/sec

Memory Bandwidth: Bandwidth is the max amount of information (counted in megabytes per second) that can be transferred over the external memory interface within a second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total number of 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

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