Radeon HD 3870 vs GeForce GTX 850A

Place in performance ranking	766	946
Place by popularity	not in top-100	not in top-100
Value for money	no data	0.03
Architecture	Maxwell (2014−2018)	TeraScale (2005−2013)
GPU code name	GM107	RV670
Market segment	Desktop	Desktop
Release date	17 March 2014 (10 years old)	19 November 2007 (16 years old)
Launch price (MSRP)	no data	$269
Current price	no data	$195 (0.7x MSRP)

Value for money

Performance to price ratio. The higher, the better.

no data

Technical specs

General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	640	320
Core clock speed	902 MHz	777 MHz
Boost clock speed	936 MHz	no data
Number of transistors	1,870 million	666 million
Manufacturing process technology	28 nm	55 nm
Power consumption (TDP)	45 Watt	106 Watt
Texture fill rate	37.44	12.43
Floating-point performance	1,198 gflops	497.3 gflops

Size and compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Interface	PCIe 3.0 x16	PCIe 2.0 x16
Length	no data	241 mm
Width	IGP	2-slot
Supplementary power connectors	no data	1x 6-pin

Memory

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory type	DDR3	GDDR4
Maximum RAM amount	2 GB	512 MB
Memory bus width	128 Bit	256 Bit
Memory clock speed	1800 MHz	2252 MHz
Memory bandwidth	28.8 GB/s	72.06 GB/s

Video outputs and ports

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors

No outputs

2x DVI, 1x S-Video

API support

List of supported graphics and general-purpose computing APIs, including their specific versions.

DirectX	12 (11_0)	10.1 (10_1)
Shader Model	5.1	4.1
OpenGL	4.6	3.3
OpenCL	1.2	N/A
Vulkan	1.1.126	N/A
CUDA	5.0	no data

Synthetic benchmark performance

Non-gaming benchmark performance comparison. The combined score is measured on a 0-100 point scale.

Combined synthetic benchmark score

This is our combined benchmark performance score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

GTX 850A 2.71
+89.5%

ATI HD 3870 1.43

GeForce GTX 850A outperforms Radeon HD 3870 by 90% based on our aggregated benchmark results.

Passmark

This is the most ubiquitous GPU benchmark, part of Passmark PerformanceTest suite. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.

Benchmark coverage: 25%

GTX 850A 1049
+89%

ATI HD 3870 555

GeForce GTX 850A outperforms Radeon HD 3870 by 89% in Passmark.

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Advantages and disadvantages

Performance score	2.71	1.43
Recency	17 March 2014	19 November 2007
Maximum RAM amount	2 GB	512 MB
Chip lithography	28 nm	55 nm
Power consumption (TDP)	45 Watt	106 Watt