Compare any two graphics cards:
VS

GeForce GT 340 1GB vs Radeon HD 4870 512MB

Intro

The GeForce GT 340 1GB comes with core clock speeds of 550 MHz on the GPU, and 850 MHz on the 1024 MB of GDDR5 memory. It features 96 SPUs along with 32 Texture Address Units and 8 ROPs.

Compare that to the Radeon HD 4870 512MB, which makes use of a 55 nm design. AMD has clocked the core speed at 750 MHz. The GDDR5 memory runs at a speed of 900 MHz on this model. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB 69 Watts
Radeon HD 4870 512MB 150 Watts
Difference: 81 Watts (117%)

Memory Bandwidth

As far as performance goes, the Radeon HD 4870 512MB should theoretically be a lot superior to the GeForce GT 340 1GB in general. (explain)

Radeon HD 4870 512MB 115200 MB/sec
GeForce GT 340 1GB 54400 MB/sec
Difference: 60800 (112%)

Texel Rate

The Radeon HD 4870 512MB will be a lot (approximately 70%) more effective at texture filtering than the GeForce GT 340 1GB. (explain)

Radeon HD 4870 512MB 30000 Mtexels/sec
GeForce GT 340 1GB 17600 Mtexels/sec
Difference: 12400 (70%)

Pixel Rate

The Radeon HD 4870 512MB should be a lot (approximately 173%) more effective at anti-aliasing than the GeForce GT 340 1GB, and also should be able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 4870 512MB 12000 Mpixels/sec
GeForce GT 340 1GB 4400 Mpixels/sec
Difference: 7600 (173%)

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

Display Prices

Hide Prices

GeForce GT 340 1GB

Amazon.com

Check prices at:

Radeon HD 4870 512MB

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

Display Specifications

Hide Specifications

Model GeForce GT 340 1GB Radeon HD 4870 512MB
Manufacturer nVidia AMD
Year February 2010 Jun 25, 2008
Code Name GT215 RV770 XT
Memory 1024 MB 512 MB
Core Speed 550 MHz 750 MHz
Memory Speed 3400 MHz 3600 MHz
Power (Max TDP) 69 watts 150 watts
Bandwidth 54400 MB/sec 115200 MB/sec
Texel Rate 17600 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 96 800(160x5)
Texture Mapping Units 32 40
Render Output Units 8 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 727 million 956 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 10.1 DirectX 10.1
OpenGL Version OpenGL 3.3 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of MB per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory in a 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 - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GT 340 1GB

Amazon.com

Check prices at:

Radeon HD 4870 512MB

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.

Comments

Be the first to leave a comment!

Your email address will not be published. Required fields are marked *


*

WordPress Anti Spam by WP-SpamShield