NVIDIA GeForce GTX 1080
vs
AMD Radeon HD 7990

NVIDIA GeForce GTX 1080
AMD Radeon HD 7990
GTX 1080 HD 7990 Difference
NVIDIA GeForce GTX 1080 AMD Radeon HD 7990
Price $ 519.0 $ 999.0 480 (92%)
Year 2016 2013 3 (0%)
Maximum Recorded Temperature 83C 82C 1 (1%)
Max Fan Noise 51.6dB 54.8dB 3.2 (6%)
Recommended Power Supply 530W 725W 195 (37%)
Benchmark CPU Intel Core i7-6700K @ 4.00GHz ($334.99) Intel Core i7-3770K @ 3.50GHz ($248.98)
CPU Impact on FPS +0.0 FPS +0.0 FPS 0 (0%)
CPU Impact on FPS % 0.0% 0.0% 0 (0%)
Benchmark Quality Settings Ultra Quality Settings Ultra Quality Settings
Average 1080p Performance 115.4 FPS 93.2 FPS 22.2 (19%)
Average 1440p Performance 84.8 FPS 67.8 FPS 17 (20%)
Average 4K Performance 50.7 FPS 39.9 FPS 10.8 (21%)
Memory 8 GB 3 GB 5 (62%)
1080p Cost Per Frame $ 4.3 $ 10.7 6.4 (149%)
1440p Cost Per Frame $ 5.9 $ 14.7 8.8 (149%)
4K Cost Per Frame $ 9.8 $ 25.0 15.2 (155%)
Overall Combination Score 80/100 46/100 34 (42%)
Our Verdict: Upgrading from HD 7990 to GTX 1080 is not recommended as it is less than 30% of improvement in performance. In general, a reasonable upgrade is between 30% and 50% or more to justify the purchase of new hardware. The price/performance ratio is much better for GTX 1080 .

Game Performance at selected quality settings

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1920x1080

NVIDIA GeForce GTX 1080
AMD Radeon HD 7990
Year Game Frames Per Second
2018 Just Cause 4
84.7
48.6
2018 Monster Hunter: World
91.2
52.3
2017 Need For Speed: Payback
117.3
67.2
2017 For Honor
156.4
89.6
2017 Project CARS 2
110.8
63.5
2017 Forza Motorsport 7
134.2
76.9
2016 Dishonored 2
80.8
46.3
2015 Rocket League
456.0
261.5
2015 Need For Speed
126.4
72.5
2015 Project CARS
121.2
69.5
2013 Crysis 3
113.6
99.6
2012 Counter-Strike: Global Offensive
312.7
179.3
2009 League of Legends
586.3
336.2

2560x1440

NVIDIA GeForce GTX 1080
AMD Radeon HD 7990
Year Game Frames Per Second
2018 Just Cause 4
62.5
35.9
2018 Monster Hunter: World
63.8
36.6
2017 Need For Speed: Payback
84.7
48.6
2017 For Honor
91.2
52.3
2017 Project CARS 2
78.2
44.8
2017 Forza Motorsport 7
121.2
69.5
2016 Dishonored 2
69.1
39.6
2015 Rocket League
195.5
112.0
2015 Need For Speed
97.7
56.0
2015 Project CARS
92.5
53.0
2013 Crysis 3
72.5
71.6
2013 Battlefield 4
102.8
68.0
2012 Counter-Strike: Global Offensive
260.6
149.4
2009 League of Legends
325.8
186.8

3840x2160

NVIDIA GeForce GTX 1080
AMD Radeon HD 7990
Year Game Frames Per Second
2018 Just Cause 4
32.6
18.7
2018 Monster Hunter: World
30.6
17.6
2017 Need For Speed: Payback
58.6
33.6
2017 For Honor
45.6
26.1
2017 Project CARS 2
65.1
37.3
2017 Forza Motorsport 7
101.6
58.3
2016 Dishonored 2
54.7
31.4
2015 Rocket League
91.2
52.3
2015 Need For Speed
65.1
37.3
2015 Project CARS
65.1
37.3
2013 Crysis 3
35.8
35.2
2013 Battlefield 4
74.9
47.5
2012 Counter-Strike: Global Offensive
234.5
134.5
2009 League of Legends
130.3
74.7

NVIDIA GeForce GTX 1080 / Core i7-6700K @ 4.00GHz

With some tuning, the GTX 1080 makes the most sense for gamers with 4K monitors. Though serious gamers hardly play at 4k. In terms of memory, the GTX 1080 's 8192 MB RAM is more than enough for modern games and should not cause any bottlenecks. In short the performance is exceptional, there's no question that this is one of the most powerful single GPU out there in 2016 .

AMD Radeon HD 7990 / Core i7-3770K @ 3.50GHz

In terms of cost, pricing clearly is a genuine issue here and the price of HD 7990 is simply ridiculous. It is worth noting that the HD 7990 is a very power hungry card and requires a decent power supply unit. This combination between HD 7990 and Intel Core i7-3770K @ 3.50GHz has less than 8% bottleneck in many games and is perfect match to avoid FPS loss. This combination between HD 7990 and Intel Core i7-3770K @ 3.50GHz is a perfect match to avoid FPS loss. With current 3072 MB RAM, the HD 7990 can have very few memory-related bottlenecks in more modern games.

GTX 1080 vs HD 7990 Specifications Comparison

Board Design

GTX 1080 HD 7990
Board NumberPG413 SKU 0C476
Length10.5 inches 267 mm12.1 inches 307 mm
Outputs1x DVI1x HDMI3x DisplayPort1x DVI4x mini-DisplayPort
Power Connectors1x 8-pin2x 8-pin
Slot WidthDual-slotDual-slot
TDP180 W375 W

Clock Speeds

GTX 1080 HD 7990
Boost Clock1733 MHz1000 MHz
GPU Clock1607 MHz950 MHz
Memory Clock1251 MHz 10008 MHz effective1500 MHz 6000 MHz effective

Graphics Card

GTX 1080 HD 7990
Bus InterfacePCIe 3.0 x16PCIe 3.0 x16
GenerationGeForce 1000Southern Islands (HD 7900)
Launch Price599 USD999 USD
ProductionActiveEnd-of-life
Release DateMay 27th, 2016Apr 24th, 2013

Graphics Features

GTX 1080 HD 7990
DirectX12.0 (12_1)12.0 (11_1)
OpenCL1.21.2
OpenGL4.64.5
Shader Model6.15.1
Vulkan1.1.821.1.77

Graphics Processor

GTX 1080 HD 7990
ArchitecturePascalGCN 1.0
Die Size314 mm²365 mm²
GPU NameGP104Malta
GPU VariantGP104-400-A1Malta XT (215-0849026)
Process Size16 nm28 nm
Transistors7,200 million4,313 million

Memory

GTX 1080 HD 7990
Bandwidth320.3 GB/s288.0 GB/s
Memory Bus256 bit384 bit
Memory Size8192 MB3072 MB
Memory TypeGDDR5XGDDR5

Render Config

GTX 1080 HD 7990
ROPs6432
Shading Units25602048
TMUs160128

Theoretical Performance

GTX 1080 HD 7990
FP32 (float) performance8,873 GFLOPS4,096 GFLOPS
FP64 (double) performance277.3 GFLOPS (1:32)1,024 GFLOPS (1:4)
Pixel Rate110.9 GPixel/s32.00 GPixel/s
Texture Rate277.3 GTexel/s128.0 GTexel/s

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