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GeForce GTS 450 vs GeForce GTX 650


Intro

The GeForce GTS 450 comes with a clock speed of 783 MHz and a GDDR5 memory frequency of 902 MHz. It also makes use of a 128-bit bus, and makes use of a 40 nm design. It is comprised of 192 SPUs, 32 Texture Address Units, and 16 ROPs.

Compare those specs to the GeForce GTX 650, which features a core clock speed of 1058 MHz and a GDDR5 memory frequency of 1250 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It features 384 SPUs, 32 Texture Address Units, and 16 Raster Operation 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 650 2270 points
GeForce GTS 450 1460 points
Difference: 810 (55%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
GeForce GTS 450 106 Watts
Difference: 42 Watts (66%)

Memory Bandwidth

In theory, the GeForce GTX 650 is 39% quicker than the GeForce GTS 450 in general, because of its greater bandwidth. (explain)

GeForce GTX 650 80000 MB/sec
GeForce GTS 450 57728 MB/sec
Difference: 22272 (39%)

Texel Rate

The GeForce GTX 650 will be a lot (more or less 35%) more effective at texture filtering than the GeForce GTS 450. (explain)

GeForce GTX 650 33856 Mtexels/sec
GeForce GTS 450 25056 Mtexels/sec
Difference: 8800 (35%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 650 is a better choice, and very much so. (explain)

GeForce GTX 650 16928 Mpixels/sec
GeForce GTS 450 12528 Mpixels/sec
Difference: 4400 (35%)

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 GTS 450

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

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Model GeForce GTS 450 GeForce GTX 650
Manufacturer nVidia nVidia
Year September 2010 September 2012
Code Name GF106 GK107
Memory 512 MB 1024 MB
Core Speed 783 MHz 1058 MHz
Memory Speed 3608 MHz 5000 MHz
Power (Max TDP) 106 watts 64 watts
Bandwidth 57728 MB/sec 80000 MB/sec
Texel Rate 25056 Mtexels/sec 33856 Mtexels/sec
Pixel Rate 12528 Mpixels/sec 16928 Mpixels/sec
Unified Shaders 192 384
Texture Mapping Units 32 32
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 1170 million 1300 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.0
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. 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 output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce GTS 450

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.

Comments

One Response to “GeForce GTS 450 vs GeForce GTX 650”
Best Single Slot Video Card? - Hardware Canucks says:

[...] GeForce GTS 450 vs GeForce GTX 650 – Performance Comparison Benchmarks @ Hardware Compare Or a 640 would be very close to the performance of a GTS 450 i think! those cards are around 100$ and 80$... I would really recommend a 650 or a 640,new technology! and they are small. You are right,the 6750 is about the same performance...But well it's not a super new card :/ [...]

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