Compare any two graphics cards:
VS

Radeon HD 4870 1GB vs Radeon HD 6750 1GB

Intro

The Radeon HD 4870 1GB uses a 55 nm design. AMD has clocked the core speed at 750 MHz. The GDDR5 RAM runs at a speed of 900 MHz on this card. It features 800(160x5) SPUs as well as 40 TAUs and 16 ROPs.

Compare that to the Radeon HD 6750 1GB, which makes use of a 40 nm design. AMD has clocked the core frequency at 725 MHz. The GDDR5 RAM runs at a speed of 1000 MHz on this specific card. It features 720 SPUs along with 36 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 1GB 86 Watts
Radeon HD 4870 1GB 150 Watts
Difference: 64 Watts (74%)

Memory Bandwidth

In theory, the Radeon HD 4870 1GB will be 80% quicker than the Radeon HD 6750 1GB in general, because of its greater data rate. (explain)

Radeon HD 4870 1GB 115200 MB/sec
Radeon HD 6750 1GB 64000 MB/sec
Difference: 51200 (80%)

Texel Rate

The Radeon HD 4870 1GB should be a little bit (about 15%) more effective at anisotropic filtering than the Radeon HD 6750 1GB. (explain)

Radeon HD 4870 1GB 30000 Mtexels/sec
Radeon HD 6750 1GB 26100 Mtexels/sec
Difference: 3900 (15%)

Pixel Rate

The Radeon HD 4870 1GB is a bit (more or less 3%) better at full screen anti-aliasing than the Radeon HD 6750 1GB, and capable of handling higher resolutions while still performing well. (explain)

Radeon HD 4870 1GB 12000 Mpixels/sec
Radeon HD 6750 1GB 11600 Mpixels/sec
Difference: 400 (3%)

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

Radeon HD 4870 1GB

Amazon.com

Check prices at:

Radeon HD 6750 1GB

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 Radeon HD 4870 1GB Radeon HD 6750 1GB
Manufacturer AMD AMD
Year Jun 25, 2008 January 2011
Code Name RV770 XT Juniper Pro
Memory 1024 MB 1024 MB
Core Speed 750 MHz 725 MHz
Memory Speed 3600 MHz 4000 MHz
Power (Max TDP) 150 watts 86 watts
Bandwidth 115200 MB/sec 64000 MB/sec
Texel Rate 30000 Mtexels/sec 26100 Mtexels/sec
Pixel Rate 12000 Mpixels/sec 11600 Mpixels/sec
Unified Shaders 800(160x5) 720
Texture Mapping Units 40 36
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 55 nm 40 nm
Transistors 956 million 1040 million
Bus PCIe 2.0 x16 PCIe x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be transferred across the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called 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 ability to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 4870 1GB

Amazon.com

Check prices at:

Radeon HD 6750 1GB

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

One Response to “Radeon HD 4870 1GB vs Radeon HD 6750 1GB”
XFX HD 6750 DDR3 1GB "con comentarios" says:

[...] XFX HD 6750 DDR3 1GB "con comentarios" Radeon HD 4870 1GB vs Radeon HD 6750 1GB – Performance Comparison Benchmarks @ Hardware Compar... Si te importa solo rendimiento me gusta mas la 4870 con bios mod al ventilador. Si te importa el [...]

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


*

WordPress Anti Spam by WP-SpamShield