Radeon RX 550 vs HD 6990

Place in performance ranking	486	519
Place by popularity	not in top-100	14
Value for money	1.56	3.29
Architecture	TeraScale 3 (2010−2013)	GCN 4.0 (2016−2020)
GPU code name	Antilles	Lexa
Market segment	Desktop	Desktop
Release date	8 March 2011 (13 years ago)	20 April 2017 (7 years ago)
Launch price (MSRP)	$699	$79
Current price	$144 (0.2x MSRP)	$121 (1.5x MSRP)

Value for money

Performance to price ratio. The higher, the better.

RX 550 has 111% better value for money than HD 6990.

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	1536	512
Core clock speed	830 MHz	1100 MHz
Boost clock speed	no data	1183 MHz
Number of transistors	2,640 million	2,200 million
Manufacturing process technology	40 nm	14 nm
Power consumption (TDP)	375 Watt	50 Watt
Texture fill rate	79.68	37.86
Floating-point performance	2x 2,549.8 gflops	1,211 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 2.0 x16	PCIe 3.0 x8
Length	295 mm	145 mm
Width	2-slot	2-slot
Supplementary power connectors	2x 8-pin	None

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	GDDR5	GDDR5
Maximum RAM amount	2 GB	4 GB
Memory bus width	256 Bit	128 Bit
Memory clock speed	5000 MHz	7000 MHz
Memory bandwidth	160.0 GB/s	112.0 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	1x DVI, 4x mini-DisplayPort	1x DVI, 1x HDMI, 1x DisplayPort
HDMI	no data	+

API support

List of supported graphics 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 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.

HD 6990 7.78
+11.1%

RX 550 7.00

HD 6990 outperforms RX 550 by 11% 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%

HD 6990 3013
+11.1%

RX 550 2712

HD 6990 outperforms RX 550 by 11% 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	7.78	7.00
Recency	8 March 2011	20 April 2017
Cost	$699	$79
Maximum RAM amount	2 GB	4 GB
Chip lithography	40 nm	14 nm
Power consumption (TDP)	375 Watt	50 Watt