GeForce GTX 660 vs Radeon R9 390X

Place in the ranking	227	439
Place by popularity	not in top-100	75
Cost-effectiveness evaluation	10.08	3.42
Power efficiency	6.09	5.09
Architecture	GCN 2.0 (2013−2017)	Kepler (2012−2018)
GPU code name	Grenada	GK106
Market segment	Desktop	Desktop
Design	reference	no data
Release date	18 June 2015 (9 years ago)	6 September 2012 (12 years ago)
Launch price (MSRP)	$429	$229

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

R9 390X has 195% better value for money than GTX 660.

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	2816	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	82.56
Floating-point processing power	5.914 TFLOPS	1.981 TFLOPS
ROPs	64	24
TMUs	176	80

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	241 mm
Height	no data	4.376" (11.1 cm)
Width	2-slot	2-slot
Supplementary power connectors	1 x 6-pin, 1 x 8-pin	1x 6-pin
SLI options	-	+
Bridgeless CrossFire	+	-

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	-	-

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	+	-
Number of Eyefinity displays	6	no data
HDMI	+	+
HDCP	-	+
Maximum VGA resolution	no data	2048x1536
DisplayPort support	+	-
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.

CrossFire	+	-
FreeSync	+	-
PowerTune	+	-
TrueAudio	+	-
VCE	+	-
DDMA audio	+	no data
3D Blu-Ray	-	+
3D Gaming	-	+
3D Vision	-	+

API compatibility

List of supported 3D 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	+	-
CUDA	-	+

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.

R9 390X 24.42
+135%

GTX 660 10.39

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.

R9 390X 9411
+135%

GTX 660 4004

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.

R9 390X 12389
+146%

GTX 660 5040

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	48 +167%	18−21 −167%

Cost per frame, $

1080p	4.71	4.87
4K	8.94	12.72

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	50−55 +157%	21−24 −157%
Assassin's Creed Valhalla	40−45 +163%	16−18 −163%
Battlefield 5	80−85 +167%	30−33 −167%
Call of Duty: Modern Warfare	50−55 +138%	21−24 −138%
Cyberpunk 2077	40−45 +150%	16−18 −150%
Far Cry 5	55−60 +167%	21−24 −167%
Far Cry New Dawn	60−65 +137%	27−30 −137%
Forza Horizon 4	140−150 +140%	60−65 −140%
Hitman 3	45−50 +172%	18−20 −172%
Horizon Zero Dawn	110−120 +151%	45−50 −151%
Metro Exodus	80−85 +140%	35−40 −140%
Red Dead Redemption 2	60−65 +137%	27−30 −137%
Shadow of the Tomb Raider	80−85 +137%	35−40 −137%
Watch Dogs: Legion	100−110 +155%	40−45 −155%

Full HD
High Preset

Assassin's Creed Odyssey	50−55 +157%	21−24 −157%
Assassin's Creed Valhalla	40−45 +163%	16−18 −163%
Battlefield 5	80−85 +167%	30−33 −167%
Call of Duty: Modern Warfare	50−55 +138%	21−24 −138%
Cyberpunk 2077	40−45 +150%	16−18 −150%
Far Cry 5	55−60 +167%	21−24 −167%
Far Cry New Dawn	60−65 +137%	27−30 −137%
Forza Horizon 4	140−150 +140%	60−65 −140%
Hitman 3	45−50 +172%	18−20 −172%
Horizon Zero Dawn	110−120 +151%	45−50 −151%
Metro Exodus	80−85 +140%	35−40 −140%
Red Dead Redemption 2	60−65 +137%	27−30 −137%
Shadow of the Tomb Raider	80−85 +137%	35−40 −137%
The Witcher 3: Wild Hunt	108 +140%	45−50 −140%
Watch Dogs: Legion	100−110 +155%	40−45 −155%

Full HD
Ultra Preset

Assassin's Creed Odyssey	50−55 +157%	21−24 −157%
Assassin's Creed Valhalla	40−45 +163%	16−18 −163%
Call of Duty: Modern Warfare	50−55 +138%	21−24 −138%
Cyberpunk 2077	40−45 +150%	16−18 −150%
Far Cry 5	55−60 +167%	21−24 −167%
Forza Horizon 4	140−150 +140%	60−65 −140%
Hitman 3	45−50 +172%	18−20 −172%
Horizon Zero Dawn	110−120 +151%	45−50 −151%
Shadow of the Tomb Raider	80−85 +137%	35−40 −137%
The Witcher 3: Wild Hunt	41 +156%	16−18 −156%
Watch Dogs: Legion	100−110 +155%	40−45 −155%

Full HD
Epic Preset

Red Dead Redemption 2

60−65
+137%

27−30

−137%

1440p
High Preset

Battlefield 5	45−50 +156%	18−20 −156%
Far Cry New Dawn	35−40 +164%	14−16 −164%

1440p
Ultra Preset

Assassin's Creed Odyssey	24−27 +150%	10−11 −150%
Assassin's Creed Valhalla	24−27 +140%	10−11 −140%
Call of Duty: Modern Warfare	27−30 +180%	10−11 −180%
Cyberpunk 2077	14−16 +150%	6−7 −150%
Far Cry 5	27−30 +180%	10−11 −180%
Forza Horizon 4	140−150 +155%	55−60 −155%
Hitman 3	27−30 +142%	12−14 −142%
Horizon Zero Dawn	50−55 +138%	21−24 −138%
Metro Exodus	45−50 +156%	18−20 −156%
Shadow of the Tomb Raider	50−55 +152%	21−24 −152%
The Witcher 3: Wild Hunt	30−33 +150%	12−14 −150%
Watch Dogs: Legion	130−140 +153%	55−60 −153%

1440p
Epic Preset

Red Dead Redemption 2

40−45
+156%

16−18

−156%

4K
High Preset

Battlefield 5	24−27 +140%	10−11 −140%
Far Cry New Dawn	18−20 +138%	8−9 −138%
Hitman 3	18−20 +138%	8−9 −138%
Horizon Zero Dawn	120−130 +152%	50−55 −152%
Metro Exodus	27−30 +180%	10−11 −180%
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%
Call of Duty: Modern Warfare	14−16 +180%	5−6 −180%
Cyberpunk 2077	6−7 +200%	2−3 −200%
Far Cry 5	12−14 +160%	5−6 −160%
Forza Horizon 4	30−35 +136%	14−16 −136%
Shadow of the Tomb Raider	30−33 +150%	12−14 −150%
Watch Dogs: Legion	10−12 +175%	4−5 −175%