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GeForce GTX 260 vs GeForce GTX 650

Intro

The GeForce GTX 260 uses a 65 nm design. nVidia has set the core speed at 576 MHz. The GDDR3 RAM works at a speed of 999 MHz on this model. It features 192 SPUs as well as 64 Texture Address Units and 28 ROPs.

Compare all of that to the GeForce GTX 650, which comes with a clock frequency of 1058 MHz and a GDDR5 memory speed of 1250 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It is made up of 384 SPUs, 32 TAUs, and 16 Raster Operation Units.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
GeForce GTX 260 182 Watts
Difference: 118 Watts (184%)

Memory Bandwidth

In theory, the GeForce GTX 260 should be a lot faster than the GeForce GTX 650 overall. (explain)

GeForce GTX 260 111888 MB/sec
GeForce GTX 650 80000 MB/sec
Difference: 31888 (40%)

Texel Rate

The GeForce GTX 260 is just a bit (more or less 9%) more effective at AF than the GeForce GTX 650. (explain)

GeForce GTX 260 36864 Mtexels/sec
GeForce GTX 650 33856 Mtexels/sec
Difference: 3008 (9%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 650 is a better choice, though not by far. (explain)

GeForce GTX 650 16928 Mpixels/sec
GeForce GTX 260 16128 Mpixels/sec
Difference: 800 (5%)

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 260

Amazon.com

GeForce GTX 650

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 260 GeForce GTX 650
Manufacturer nVidia nVidia
Year June 16, 2008 September 2012
Code Name G200 GK107
Fab Process 65 nm 28 nm
Bus PCIe x16 2.0 PCIe 3.0 x16
Memory 896 MB 2048 MB
Core Speed 576 MHz 1058 MHz
Shader Speed 1242 MHz 1058 MHz
Memory Speed 999 MHz (1998 MHz effective) 1250 MHz (5000 MHz effective)
Unified Shaders 192 384
Texture Mapping Units 64 32
Render Output Units 28 16
Bus Type GDDR3 GDDR5
Bus Width 448-bit 128-bit
DirectX Version DirectX 10 DirectX 11.0
OpenGL Version OpenGL 3.1 OpenGL 4.3
Power (Max TDP) 182 watts 64 watts
Shader Model 4.0 5.0
Bandwidth 111888 MB/sec 80000 MB/sec
Texel Rate 36864 Mtexels/sec 33856 Mtexels/sec
Pixel Rate 16128 Mpixels/sec 16928 Mpixels/sec

Memory Bandwidth: Bandwidth is the max amount of information (in units of megabytes per second) that can be transferred past the external memory interface within a second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the 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 are applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its 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 - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Comments

4 Responses to “GeForce GTX 260 vs GeForce GTX 650”
randy says:
The GTX 260 is essentially the same as GTX 650, the advantage the GTX 650 has is Directx 11
SeriousJ says:
Looking at the gtx 650's power consumption, this has to be a very effective card for casual gaming deliviering 260's performance. (+directx 11.1)
PAul says:
lol 650 for lyfe!
Dark_Razar says:
Pros e cons of the two cards:

GTX 260:
- It is faster in general.
- A lot more Cheaper than the GTX 650 (You can save more than 60$).

GTX 650
- DirectX 11.
- Less Power Consuption.

It's not a real comparison, just because the GTX 260 is pretty old... But it's still a good graphic card.

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