Radeon R9 280X2 vs R9 390

General info

GPU architecture, market segment, value for money and other general parameters compared.

Place in performance ranking	220	not rated
Place by popularity	not in top-100	not in top-100
Value for money	12.47	no data
Architecture	GCN 2.0 (2013−2017)	GCN 1.0 (2012−2020)
GPU code name	Grenada	Tahiti
Market segment	Desktop	Desktop
Design	reference	no data
Release date	18 June 2015 (8 years ago)	no data
Launch price (MSRP)	$329	no data
Current price	$20 (0.1x MSRP)	$191

Value for money

Performance to price ratio. The higher, the better.

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	2560	2048
Boost clock speed	1000 MHz	1000 MHz
Number of transistors	6,200 million	4,313 million
Manufacturing process technology	28 nm	28 nm
Power consumption (TDP)	275 Watt	375 Watt
Texture fill rate	160.0	128.0
Floating-point performance	5,120 gflops	no data

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).

Bus support	PCIe 3.0	no data
Interface	PCIe 3.0 x16	PCIe 3.0 x16
Length	275 mm	315 mm
Width	2-slot	2-slot
Supplementary power connectors	1 x 6-pin, 1 x 8-pin	3x 8-pin
Bridgeless CrossFire	1	no data

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
High bandwidth memory (HBM)	-	no data
Maximum RAM amount	0 MB	3 GB
Memory bus width	512 Bit	384 Bit
Memory clock speed	1000 MHz	6 GB/s
Memory bandwidth	384 GB/s	288.0 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	2x DVI, 1x HDMI, 1x DisplayPort	6x mini-DisplayPort 1.2
Eyefinity	1	no data
Number of Eyefinity displays	6	no data
HDMI	+	no data
DisplayPort support	+	no data

Technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

AppAcceleration	-	no data
CrossFire	1	no data
Enduro	-	no data
FreeSync	1	no data
HD3D	-	no data
PowerTune	+	no data
TrueAudio	+	no data
ZeroCore	-	no data
VCE	+	no data
DDMA audio	+	no data

API support

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

DirectX	DirectX® 12	12 (11_1)
Shader Model	6.3	6.5 (5.1)
OpenGL	4.6	4.6
OpenCL	2.0	2.1 (1.2)
Vulkan	+	1.2.170
Mantle	+	no data

Advantages and disadvantages

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Power consumption (TDP)

275 Watt

375 Watt

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

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