GeForce GTX 660 vs Radeon R9 390X

Place in performance ranking	208	404
Place by popularity	not in top-100	69
Cost-effectiveness evaluation	12.62	2.37
Architecture	GCN (2011−2017)	Kepler (2012−2018)
GPU code name	Grenada XT	GK106
Market segment	Desktop	Desktop
Design	reference	no data
Release date	16 June 2015 (8 years ago)	6 September 2012 (11 years ago)
Launch price (MSRP)	$429	$229
Current price	$19.99 (0x MSRP)	$172 (0.8x MSRP)

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

R9 390X has 432% better value for money than GTX 660.

Detailed specifications

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	2816	960
CUDA cores	no data	960
Core clock speed	no data	980 MHz
Boost clock speed	1050 MHz	1033 MHz
Number of transistors	6,200 million	2,540 million
Manufacturing process technology	28 nm	28 nm
Power consumption (TDP)	275 Watt	140 Watt
Texture fill rate	184.8	78.4 billion/sec
Floating-point performance	5,914 gflops	1,981 gflops

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).

Bus support	PCIe 3.0	PCI Express 3.0
Interface	PCIe 3.0 x16	PCIe 3.0 x16
Length	275 mm	9.5" (24.1 cm)
Height	no data	4.376" (11.1 cm)
Width	2-slot	2-slot
Supplementary power connectors	1 x 6-pin, 1 x 8-pin	One 6-pin
SLI options	no data	+
Bridgeless CrossFire	1	no data

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
High bandwidth memory (HBM)	-	no data
Maximum RAM amount	0 MB	2 GB
Memory bus width	512 Bit	192-bit GDDR5
Memory clock speed	1050 MHz	6.0 GB/s
Memory bandwidth	384 GB/s	144.2 GB/s
Shared memory	-	no data

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	One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
Multi monitor support	no data	4 displays
Eyefinity	+	no data
Number of Eyefinity displays	6	no data
HDMI	+	+
HDCP	no data	+
Maximum VGA resolution	no data	2048x1536
DisplayPort support	+	no data
Audio input for HDMI	no data	Internal

Supported 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
3D Blu-Ray	no data	+
3D Gaming	no data	+
3D Vision	no data	+

API compatibility

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

DirectX	DirectX® 12	12 (11_0)
Shader Model	6.3	5.1
OpenGL	4.6	4.3
OpenCL	2.0	1.2
Vulkan	+	1.1.126
Mantle	+	no data
CUDA	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.

R9 390X 24.38
+136%

GTX 660 10.33

Radeon R9 390X outperforms GeForce GTX 660 by 136% 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%

R9 390X 9436
+136%

GTX 660 3999

Radeon R9 390X outperforms GeForce GTX 660 by 136% in Passmark.

3DMark Fire Strike Graphics

Fire Strike is a DirectX 11 benchmark for gaming PCs. It features two separate tests displaying a fight between a humanoid and a fiery creature made of lava. Using 1920x1080 resolution, Fire Strike shows off some realistic graphics and is quite taxing on hardware.

Benchmark coverage: 14%

R9 390X 12389
+146%

GTX 660 5040

Radeon R9 390X outperforms GeForce GTX 660 by 146% in 3DMark Fire Strike Graphics.

Gaming performance

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

Average FPS across all PC games

Here are the average frames per second in a large set of popular games across different resolutions:

Full HD	91 +93.6%	47 −93.6%
4K	47 +161%	18−20 −161%

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

40−45
+150%

16−18

−150%

Full HD
Medium Preset

Assassin's Creed Odyssey	45−50 +167%	18−20 −167%
Assassin's Creed Valhalla	40−45 +139%	18−20 −139%
Battlefield 5	75−80 +163%	30−33 −163%
Call of Duty: Modern Warfare	60−65 +137%	27−30 −137%
Cyberpunk 2077	40−45 +150%	16−18 −150%
Far Cry 5	60−65 +137%	27−30 −137%
Far Cry New Dawn	60−65 +137%	27−30 −137%
Forza Horizon 4	80−85 +170%	30−33 −170%
Hitman 3	70−75 +143%	30−33 −143%
Horizon Zero Dawn	50−55 +148%	21−24 −148%
Red Dead Redemption 2	40−45 +150%	16−18 −150%
Shadow of the Tomb Raider	50−55 +157%	21−24 −157%
Watch Dogs: Legion	45−50 +161%	18−20 −161%

Full HD
High Preset

Assassin's Creed Odyssey	45−50 +167%	18−20 −167%
Assassin's Creed Valhalla	40−45 +139%	18−20 −139%
Battlefield 5	75−80 +163%	30−33 −163%
Call of Duty: Modern Warfare	60−65 +137%	27−30 −137%
Cyberpunk 2077	40−45 +150%	16−18 −150%
Far Cry 5	60−65 +137%	27−30 −137%
Far Cry New Dawn	60−65 +137%	27−30 −137%
Forza Horizon 4	80−85 +170%	30−33 −170%
Hitman 3	70−75 +143%	30−33 −143%
Horizon Zero Dawn	50−55 +148%	21−24 −148%
Metro Exodus	40−45 +150%	16−18 −150%
Red Dead Redemption 2	40−45 +150%	16−18 −150%
Shadow of the Tomb Raider	50−55 +157%	21−24 −157%
The Witcher 3: Wild Hunt	76 +153%	30−33 −153%
Watch Dogs: Legion	45−50 +161%	18−20 −161%

Full HD
Ultra Preset

Assassin's Creed Odyssey	45−50 +167%	18−20 −167%
Assassin's Creed Valhalla	40−45 +139%	18−20 −139%
Battlefield 5	75−80 +163%	30−33 −163%
Cyberpunk 2077	40−45 +150%	16−18 −150%
Far Cry 5	60−65 +137%	27−30 −137%
Far Cry New Dawn	60−65 +137%	27−30 −137%
Forza Horizon 4	80−85 +170%	30−33 −170%
The Witcher 3: Wild Hunt	41 +156%	16−18 −156%
Watch Dogs: Legion	45−50 +161%	18−20 −161%

1440p
High Preset

Call of Duty: Modern Warfare	35−40 +164%	14−16 −164%
Hitman 3	40−45 +156%	16−18 −156%
Horizon Zero Dawn	30−35 +167%	12−14 −167%
Metro Exodus	24−27 +140%	10−11 −140%
Red Dead Redemption 2	18−20 +157%	7−8 −157%
Shadow of the Tomb Raider	30−35 +167%	12−14 −167%

1440p
Ultra Preset

Assassin's Creed Odyssey	24−27 +160%	10−11 −160%
Assassin's Creed Valhalla	24−27 +140%	10−11 −140%
Battlefield 5	50−55 +157%	21−24 −157%
Cyberpunk 2077	14−16 +150%	6−7 −150%
Far Cry 5	40−45 +163%	16−18 −163%
Far Cry New Dawn	45−50 +161%	18−20 −161%
Forza Horizon 4	50−55 +138%	21−24 −138%
The Witcher 3: Wild Hunt	27−30 +142%	12−14 −142%
Watch Dogs: Legion	18−20 +138%	8−9 −138%

4K
High Preset

Call of Duty: Modern Warfare	18−20 +138%	8−9 −138%
Hitman 3	21−24 +156%	9−10 −156%
Horizon Zero Dawn	16−18 +167%	6−7 −167%
Metro Exodus	14−16 +150%	6−7 −150%
Red Dead Redemption 2	12−14 +160%	5−6 −160%
Shadow of the Tomb Raider	16−18 +143%	7−8 −143%
The Witcher 3: Wild Hunt	29 +142%	12−14 −142%

4K
Ultra Preset

Assassin's Creed Odyssey	14−16 +150%	6−7 −150%
Assassin's Creed Valhalla	12−14 +160%	5−6 −160%
Battlefield 5	27−30 +142%	12−14 −142%
Cyberpunk 2077	6−7 +200%	2−3 −200%
Far Cry 5	20−22 +150%	8−9 −150%
Far Cry New Dawn	24−27 +140%	10−11 −140%
Forza Horizon 4	30−35 +143%	14−16 −143%
Watch Dogs: Legion	10−12 +175%	4−5 −175%