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GeForce GTX Titan vs Geforce GTX 780

Intro

The GeForce GTX Titan features a GPU clock speed of 837 MHz, and the 6144 MB of GDDR5 RAM is set to run at 1502 MHz through a 384-bit bus. It also is comprised of 2688 Stream Processors, 224 Texture Address Units, and 48 Raster Operation Units.

Compare that to the Geforce GTX 780, which features a GPU core clock speed of 863 MHz, and 3072 MB of GDDR5 memory running at 1502 MHz through a 384-bit bus. It also features 2304 SPUs, 192 Texture Address Units, and 48 ROPs.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Both cards have exactly the same memory bandwidth, so theoretically they should perform the same. (explain)

Texel Rate

The GeForce GTX Titan is a little bit (about 13%) faster with regards to texture filtering than the Geforce GTX 780. (explain)

GeForce GTX Titan 187488 Mtexels/sec
Geforce GTX 780 165696 Mtexels/sec
Difference: 21792 (13%)

Pixel Rate

If using a high screen resolution is important to you, then the Geforce GTX 780 is a better choice, but only just. (explain)

Geforce GTX 780 41424 Mpixels/sec
GeForce GTX Titan 40176 Mpixels/sec
Difference: 1248 (3%)

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 Titan

Amazon.com

Geforce GTX 780

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 Titan Geforce GTX 780
Manufacturer nVidia nVidia
Year February 2013 May 2013
Code Name GK110 GK110
Fab Process 28 nm 28 nm
Bus PCIe 3.0 x16 PCIe 3.0 x16
Memory 6144 MB 3072 MB
Core Speed 837 MHz 863 MHz
Shader Speed 837 MHz 863 MHz
Memory Speed 1502 MHz (6008 MHz effective) 1502 MHz (6008 MHz effective)
Unified Shaders 2688 2304
Texture Mapping Units 224 192
Render Output Units 48 48
Bus Type GDDR5 GDDR5
Bus Width 384-bit 384-bit
DirectX Version DirectX 11.0 DirectX 11.0
OpenGL Version OpenGL 4.3 OpenGL 4.3
Power (Max TDP) 250 watts 250 watts
Shader Model 5.0 5.0
Bandwidth 288384 MB/sec 288384 MB/sec
Texel Rate 187488 Mtexels/sec 165696 Mtexels/sec
Pixel Rate 40176 Mpixels/sec 41424 Mpixels/sec

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in MB per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Comments

4 Responses to “GeForce GTX Titan vs Geforce GTX 780”
Anonymous says:
yolo :] it's awesome
Animetakerfan says:
MY GTX 780 Phantom has:
GPU clock: 1079MHZ
Memory clock: 1652MHz
It´s a Titan killer
ali says:
I searching for the best vga to put it in my specs list for my lap?
NewGirlInTown says:
At almost half the price of the Titan and it can handle the best games the same? It's almost a no brainer.
Much better choice than even going with SLI OR Crossfire.
It's fast! Crisp clean visuals. Fast FPS. No lag due to your card.
As another commenter said, It's a Titan killer!

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