Home GPU Comparison AMD Radeon RX 580 vs AMD Radeon HD 7990

AMD Radeon RX 580 vs AMD Radeon HD 7990

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 580 and 3GB VRAM Radeon HD 7990 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 580 's Advantages
Released 4 years late
Boost Clock has increased by 34% (1340MHz vs 1000MHz)
More VRAM (8GB vs 3GB)
256 additional rendering cores
Lower TDP (185W vs 375W)
AMD Radeon HD 7990 's Advantages
Larger VRAM bandwidth (288.0GB/s vs 256.0GB/s)

Score

Benchmark

FP32 (float)
Radeon RX 580 +50%
6.175 TFLOPS
Radeon HD 7990
4.096 TFLOPS
VS

Graphics Card

Apr 2017
Release Date
Apr 2013
Polaris
Generation
Southern Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

1257 MHz
Base Clock
950 MHz
1340 MHz
Boost Clock
1000 MHz
2000 MHz
Memory Clock
1500 MHz

Memory

8GB
Memory Size
3GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
384bit
256.0GB/s
Bandwidth
288.0GB/s

Render Config

-
SM Count
-
36
Compute Units
32
2304
Shading Units
2048
144
TMUs
128
32
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
2 MB
L2 Cache
768 KB

Theoretical Performance

42.88 GPixel/s
Pixel Rate
32.00 GPixel/s
193.0 GTexel/s
Texture Rate
128.0 GTexel/s
6.175 TFLOPS
FP16 (half)
-
6.175 TFLOPS
FP32 (float)
4.096 TFLOPS
385.9 GFLOPS
FP64 (double)
1024 GFLOPS

Graphics Processor

Polaris 20
GPU Name
Malta
Polaris 20 XTX (215-0910038)
GPU Variant
Malta XT (215-0849026)
GCN 4.0
Architecture
GCN 1.0
GlobalFoundries
Foundry
TSMC
14 nm
Process Size
28 nm
5.7 billion
Transistors
4.313 billion
232 mm²
Die Size
365 mm²

Board Design

185W
TDP
375W
450 W
Suggested PSU
750 W
1x HDMI 2.0b 3x DisplayPort 1.4a
Outputs
1x DVI 4x mini-DisplayPort 1.2
1x 8-pin
Power Connectors
2x 8-pin

Graphics Features

12 (12_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
2.1
OpenCL
1.2
1.2
Vulkan
1.2
-
CUDA
-
6.4
Shader Model
5.1

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