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GeForce GTS 450 vs Radeon HD 7750

Intro

The GeForce GTS 450 makes use of a 40 nm design. nVidia has clocked the core frequency at 783 MHz. The GDDR5 memory works at a frequency of 902 MHz on this specific card. It features 192 SPUs along with 32 TAUs and 16 ROPs.

Compare all of that to the Radeon HD 7750, which features a core clock frequency of 800 MHz and a GDDR5 memory speed of 1125 MHz. It also features a 128-bit bus, and makes use of a 28 nm design. It is made up of 512 SPUs, 32 TAUs, and 16 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

Radeon HD 7750 2240 points
GeForce GTS 450 1453 points
Difference: 787 (54%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750 55 Watts
GeForce GTS 450 106 Watts
Difference: 51 Watts (93%)

Memory Bandwidth

In theory, the Radeon HD 7750 should be 25% quicker than the GeForce GTS 450 overall, due to its higher data rate. (explain)

Radeon HD 7750 72000 MB/sec
GeForce GTS 450 57728 MB/sec
Difference: 14272 (25%)

Texel Rate

The Radeon HD 7750 will be just a bit (approximately 2%) more effective at AF than the GeForce GTS 450. (explain)

Radeon HD 7750 25600 Mtexels/sec
GeForce GTS 450 25056 Mtexels/sec
Difference: 544 (2%)

Pixel Rate

The Radeon HD 7750 should be just a bit (more or less 2%) faster with regards to full screen anti-aliasing than the GeForce GTS 450, and capable of handling higher resolutions without losing too much performance. (explain)

Radeon HD 7750 12800 Mpixels/sec
GeForce GTS 450 12528 Mpixels/sec
Difference: 272 (2%)

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

Check prices at:

Radeon HD 7750

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 GTS 450 Radeon HD 7750
Manufacturer nVidia AMD
Year September 2010 February 2012
Code Name GF106 Cape Verde Pro
Memory 512 MB 1024 MB
Core Speed 783 MHz 800 MHz
Memory Speed 3608 MHz 4500 MHz
Power (Max TDP) 106 watts 55 watts
Bandwidth 57728 MB/sec 72000 MB/sec
Texel Rate 25056 Mtexels/sec 25600 Mtexels/sec
Pixel Rate 12528 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 192 512
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 1500 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 4.1 OpenGL 4.2

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of MB per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total texture units 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 processed in a second.

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

Display Prices

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GeForce GTS 450

Amazon.com

Check prices at:

Radeon HD 7750

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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