ATI Radeon HD 4850 vs HIS Radeon HD 4850 IceQ 4 1 GB (H485Q1GH)

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ATI Radeon HD 4850 vs HIS Radeon HD 4850 IceQ 4 1 GB (H485Q1GH)

Theoretical performance comparison

Each GPU has several theoretical parameters that influence real-world game, 3D graphics and compute performance. They are pixel fillrate, texture fillrate, memory bandwidth, single- and double-precision performance. Below you will find why they are important, and which card has better characteristics.

Pixel fill rate (gigapixels/s)

Higher is better

Pixel fillrate parameter shows how many pixels a GPU can draw on screen and off screen. Higher numbers allow cards to support higher maximum display resolutions and frame rates. There are two characteristics that affect the maximum pixel fillrate. These are the number of ROPs (Raster Operations Pipelines) and graphics clock speed. Since both characteristics are identical between graphics cards, their pixel fillrate is also equal.

- ATI Radeon HD 4850

- HIS Radeon HD 4850 IceQ 4 1 GB

Texture fill rate (gigatexels/s)

Higher is better

Because two models have the same number of TMUs and the same graphics clock speed, their texture fillrate is identical.

Single Precision performance (GFLOPS)

1200

960

720

480

240

1000

Higher is better

Single Precision performance indicates how good the card is at executing programs, that make an extensive use of single-precision floating point numbers. This performance is expressed in billions of Floating Point Operations Per Second, or GFLOPS. As a rule, the faster stream processors or CUDA cores run at, and the more cores / processors the graphics card has, the better Single Precision performance will be. These two GPUs have the same maximum single-precision performance.

Double Precision performance (GFLOPS)

300

240

180

120

200

Higher is better

Similar to Single Precision performance, Double Precision one also provides the maximum number of floating-point operations, executed by stream processors or CUDA cores, but it refers to double precision (64-bit) operations. Both graphics cards have the same performance.

- ATI Radeon HD 4850

- HIS Radeon HD 4850 IceQ 4 1 GB

Memory bandwidth (GB/s)

63.6

Higher is better

Memory bandwidth of both GPUs is identical.

Specs comparison

All rows with different specifications or features are highlighted.


General information
Market segment	Desktop
Manufacturer	ATI	HIS
Model	Radeon HD 4850	Radeon HD 4850 IceQ 4 1 GB
Part number		H485Q1GH
Based on	N/A	ATI Radeon HD 4850
Architecture / Interface
Die name
Architecture
Fabrication process
Bus interface
Cores / shaders
Color ROPs
Stream processors
Pixel fill rate
Texture units
Texture fill rate
Single Precision performance
Double Precision performance
Clocks / Memory
Graphics clock	625 MHz
Memory size	1024 MB
Memory type	GDDR3
Memory clock
Memory interface width
Memory bandwidth
Other features
Maximum crossfire options
Maximum power