Radeon RX 550X vs HD 6850 X2

Place in the ranking	566	586
Place by popularity	not in top-100	not in top-100
Power efficiency	1.80	8.28
Architecture	TeraScale 2 (2009−2015)	GCN 4.0 (2016−2020)
GPU code name	Barts	Lexa
Market segment	Desktop	Desktop
Release date	19 September 2011 (13 years ago)	16 December 2018 (5 years ago)

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	960	512
Core clock speed	800 MHz	1100 MHz
Boost clock speed	no data	1183 MHz
Number of transistors	1,700 million	2,200 million
Manufacturing process technology	40 nm	14 nm
Power consumption (TDP)	254 Watt	50 Watt
Texture fill rate	38.40	37.86
Floating-point processing power	1.536 TFLOPS	1.211 TFLOPS
ROPs	32	16
TMUs	48	32

Form factor & 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 2.0 x16	PCIe 3.0 x8
Length	no data	145 mm
Width	2-slot	2-slot
Supplementary power connectors	2x 8-pin	None

VRAM capacity and type

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	GDDR5	GDDR5
Maximum RAM amount	2 GB	4 GB
Memory bus width	256 Bit	128 Bit
Memory clock speed	1050 MHz	1500 MHz
Memory bandwidth	134.4 GB/s	96 GB/s

Connectivity and outputs

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	2x DVI, 1x HDMI, 1x DisplayPort	1x DVI, 1x HDMI, 1x DisplayPort
HDMI	+	+

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX	11.2 (11_0)	12 (12_0)
Shader Model	5.0	6.4
OpenGL	4.4	4.6
OpenCL	1.2	2.0
Vulkan	N/A	1.2.131

Synthetic benchmark performance

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

Combined synthetic benchmark score

This is our combined benchmark 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.

HD 6850 X2 6.57
+10.6%

RX 550X 5.94

Passmark

This is the most ubiquitous GPU benchmark. 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.

HD 6850 X2 2534
+10.6%

RX 550X 2291

Gaming performance

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

Pros & cons summary

Performance score	6.57	5.94
Recency	19 September 2011	16 December 2018
Maximum RAM amount	2 GB	4 GB
Chip lithography	40 nm	14 nm
Power consumption (TDP)	254 Watt	50 Watt

HD 6850 X2 has a 10.6% higher aggregate performance score.

RX 550X, on the other hand, has an age advantage of 7 years, a 100% higher maximum VRAM amount, a 185.7% more advanced lithography process, and 408% lower power consumption.

The Radeon HD 6850 X2 is our recommended choice as it beats the Radeon RX 550X in performance tests.

Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.