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GPU Comparison

Side-by-side comparison of specifications and performance

Performance Comparison

AMD Radeon RX 480

100%
100%

AMD Radeon HD 7990

100%
100%

Technical Specifications

SpecificationAMD Radeon RX 480AMD Radeon HD 7990
Graphics ProcessorDifferent
Ellesmere
Malta x2
CoresDifferent
2304
2048 x2
TMUsDifferent
144
128 x2
ROPsDifferent
32
32 x2
Memory SizeDifferent
8 GB
3 GB x2
Memory Type
GDDR5
GDDR5
Bus WidthDifferent
256 bit
384 bit x2

Graphics Processor

FeatureAMD Radeon RX 480AMD Radeon HD 7990
GPU NameDifferent
Ellesmere
Malta
GPU VariantDifferent
Polaris 10 XT(215-0876184)
Malta XT(215-0849026)
ArchitectureDifferent
GCN 4.0
GCN 1.0
FoundryDifferent
GlobalFoundries
TSMC
Process SizeDifferent
14 nm
28 nm
TransistorsDifferent
5,700 million
4,313 million
DensityDifferent
24.6M / mm²
11.8M / mm²
Die SizeDifferent
232 mm²
365 mm²
Chip PackageDifferent
BGA-1401
N/A

Graphics Card

FeatureAMD Radeon RX 480AMD Radeon HD 7990
Release DateDifferent
Jun 29th, 2016
Apr 24th, 2013
GenerationDifferent
Arctic Islands(RX 400)
Southern Islands(HD 7900)
PredecessorDifferent
Pirate Islands
Northern Islands
SuccessorDifferent
Polaris
Sea Islands
ProductionDifferent
Active
End-of-life
Launch PriceDifferent
229 USD
999 USD
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
ReviewsDifferent
86 in our database
37 in our database

Clock Speeds

FeatureAMD Radeon RX 480AMD Radeon HD 7990
Base ClockDifferent
1120 MHz
950 MHz
Boost ClockDifferent
1266 MHz
1000 MHz
Memory ClockDifferent
2000 MHz8 Gbps effective
1500 MHz6 Gbps effective

Memory

FeatureAMD Radeon RX 480AMD Radeon HD 7990
Memory SizeDifferent
8 GB
3 GB
Memory Type
GDDR5
GDDR5
Memory BusDifferent
256 bit
384 bit
BandwidthDifferent
256.0 GB/s
288.0 GB/s

Render Config

FeatureAMD Radeon RX 480AMD Radeon HD 7990
Shading UnitsDifferent
2304
2048
TMUsDifferent
144
128
ROPs
32
32
Compute UnitsDifferent
36
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 CacheDifferent
2 MB
768 KB

Theoretical Performance

FeatureAMD Radeon RX 480AMD Radeon HD 7990
Pixel RateDifferent
40.51 GPixel/s
32.00 GPixel/s
Texture RateDifferent
182.3 GTexel/s
128.0 GTexel/s
FP16 (half)Different
5.834 TFLOPS (1:1)
N/A
FP32 (float)Different
5.834 TFLOPS
4.096 TFLOPS
FP64 (double)Different
364.6 GFLOPS (1:16)
1,024.0 GFLOPS (1:4)

Board Design

FeatureAMD Radeon RX 480AMD Radeon HD 7990
Slot Width
Dual-slot
Dual-slot
LengthDifferent
240 mm9.4 inches
304 mm12 inches
HeightDifferent
95 mm3.7 inches
106 mm4.2 inches
WidthDifferent
35 mm1.4 inches
38 mm1.5 inches
TDPDifferent
150 W
375 W
Suggested PSUDifferent
450 W
750 W
OutputsDifferent
1x HDMI 2.0b3x DisplayPort 1.4a
1x DVI4x mini-DisplayPort 1.2
Power ConnectorsDifferent
1x 6-pin
2x 8-pin
Board NumberDifferent
C940, 109-D00947-00_02
109-C47637-00A_02

Graphics Features

FeatureAMD Radeon RX 480AMD Radeon HD 7990
DirectXDifferent
12 (12_0)
12 (11_1)
OpenGL
4.6
4.6
OpenCLDifferent
2.1
2.1 (1.2)
VulkanDifferent
1.3
1.2.175
Shader ModelDifferent
6.7
6.5 (5.1)

Comparison Summary

7
Specifications Compared
8
Feature Categories
49
Detailed Features

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