Join Us On Facebook

Compare any two graphics cards:
VS

GeForce GTS 450 1GB vs Radeon HD 5870

Intro

The GeForce GTS 450 1GB has core clock speeds of 783 MHz on the GPU, and 902 MHz on the 1024 MB of GDDR5 memory. It features 192 SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

Compare all of that to the Radeon HD 5870, which comes with a core clock frequency of 850 MHz and a GDDR5 memory frequency of 1200 MHz. It also makes use of a 256-bit memory bus, and makes use of a 40 nm design. It is made up of 1600(320x5) SPUs, 80 TAUs, and 32 Raster Operation Units.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 1GB 106 Watts
Radeon HD 5870 188 Watts
Difference: 82 Watts (77%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5870 should be 166% faster than the GeForce GTS 450 1GB overall, because of its higher bandwidth. (explain)

Radeon HD 5870 153600 MB/sec
GeForce GTS 450 1GB 57728 MB/sec
Difference: 95872 (166%)

Texel Rate

The Radeon HD 5870 should be quite a bit (about 171%) faster with regards to texture filtering than the GeForce GTS 450 1GB. (explain)

Radeon HD 5870 68000 Mtexels/sec
GeForce GTS 450 1GB 25056 Mtexels/sec
Difference: 42944 (171%)

Pixel Rate

The Radeon HD 5870 should be a lot (approximately 117%) better at FSAA than the GeForce GTS 450 1GB, and should be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon HD 5870 27200 Mpixels/sec
GeForce GTS 450 1GB 12528 Mpixels/sec
Difference: 14672 (117%)

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 GTS 450 1GB

Amazon.com

Radeon HD 5870

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 GTS 450 1GB Radeon HD 5870
Manufacturer nVidia AMD
Year September 2010 September 23, 2009
Code Name GF106 Cypress XT
Fab Process 40 nm 40 nm
Bus PCIe x16 PCIe 2.1 x16
Memory 1024 MB 1024 MB
Core Speed 783 MHz 850 MHz
Shader Speed 1566 MHz (N/A) MHz
Memory Speed 902 MHz (3608 MHz effective) 1200 MHz (4800 MHz effective)
Unified Shaders 192 1600(320x5)
Texture Mapping Units 32 80
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 3.2
Power (Max TDP) 106 watts 188 watts
Shader Model 5.0 5.0
Bandwidth 57728 MB/sec 153600 MB/sec
Texel Rate 25056 Mtexels/sec 68000 Mtexels/sec
Pixel Rate 12528 Mpixels/sec 27200 Mpixels/sec

Memory Bandwidth: Bandwidth is the max amount of information (in units of megabytes per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the bus width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Comments

Be the first to leave a comment!

Your email address will not be published.


You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>

Spam Protection by WP-SpamFree