ATI Radeon HD 3870 X2 vs ATI HD 3850 X2

ATI Radeon HD 3870 X2
ATI Radeon HD 3850 X2

General info

Comparison of Radeon HD 3870 X2 and Radeon HD 3850 X2 architecture, market type and release date.
Place in performance rating
 
Architecture
TeraScale
 
TeraScale
Code name
R680
 
RV670
Type
Desktop
 
Desktop
Release date
26 January 2008
 
4 April 2008
Launch price (MSRP)
$449
 
$349

Technical specs

Radeon HD 3870 X2 and Radeon HD 3850 X2's general performance parameters such as number of shaders, GPU core clock, manufacturing process, texturing and calculation speed. These parameters indirectly speak of Radeon HD 3870 X2 and Radeon HD 3850 X2's performance, but for precise assessment you have to consider its benchmark and gaming test results.
Pipelines
320
 
320
Core clock speed
825 MHz
 
669 MHz
Transistor count
666 million
 
666 million
Manufacturing process technology
55 nm
 
55 nm
Power consumption (TDP)
165 Watt
 
140 Watt
Texture fill rate
13.20
 
10.70
Floating-point performance
2x 528.0 gflops
 
2x 428.2 gflops

Compatibility, dimensions and requirements

Information on Radeon HD 3870 X2 and Radeon HD 3850 X2 compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).
Interface
PCIe 2.0 x16
 
PCIe 2.0 x16
Length
267 mm
 
267 mm
Supplementary power connectors
1x 6-pin + 1x 8-pin
 
no data

Memory

Parameters of memory installed on Radeon HD 3870 X2 and Radeon HD 3850 X2: its type, size, bus, clock and resulting bandwidth. Note that GPUs integrated into processors don't have dedicated memory and use a shared part of system RAM.
Memory type
GDDR3
 
GDDR3
Maximum RAM amount
512 MB
 
512 MB
Memory bus width
256 Bit
 
256 Bit
Memory clock speed
1802 MHz
 
1656 MHz
Memory bandwidth
57.66 GB/s
 
52.99 GB/s

Video outputs and ports

Types and number of video connectors present on Radeon HD 3870 X2 and Radeon HD 3850 X2.
Display Connectors
2x DVI, 1x S-Video
 
2x DVI, 1x S-Video

API support

APIs supported by Radeon HD 3870 X2 and Radeon HD 3850 X2, sometimes including their particular versions.
DirectX
10.1 (10_1)
 
10.1 (10_1)
OpenGL
3.3
 
3.3

Benchmark performance

Non-gaming benchmarks performance of Radeon HD 3870 X2 and Radeon HD 3850 X2. Note that overall benchmark performance is measured in points in 0-100 range.

Overall benchmark performance

ATI HD 3870 X2 0.15
ATI HD 3850 X2 0.45 +200%

Passmark

ATI HD 3870 X2 708
ATI HD 3850 X2 822 +16.1%

Gaming performance

Let's see how good Radeon HD 3870 X2 and Radeon HD 3850 X2 are for gaming. Particular gaming benchmark results are measured in FPS.

Advantages of ATI Radeon HD 3870 X2

Higher memory bandwidth (57.66 vs 52.99 GB/s)

Advantages of ATI Radeon HD 3850 X2

200% faster (about 3 times) in synthetic tests
Somewhat newer (4 April 2008 vs 26 January 2008)
Cheaper ($349 vs $449)
Less power hungry (140 vs 165 watts)

So, HD 3870 X2 or HD 3850 X2?

Judging by the results of synthetic and gaming tests, Technical City recommends ATI Radeon HD 3850 X2.
Should you still have questions on choice between Radeon HD 3870 X2 and Radeon HD 3850 X2, ask them in Comments section, and we shall answer.

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