GeForce GTX 1080 vs Radeon HD 8990 OEM
We compared two Desktop platform GPUs: 8GB VRAM GeForce GTX 1080 and 3GB VRAM Radeon HD 8990 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce GTX 1080 's Advantages
Released 3 years and 1 months late
Boost Clock has increased by 73% (1733MHz vs 1000MHz)
More VRAM (8GB vs 3GB)
Larger VRAM bandwidth (320.3GB/s vs 288.0GB/s)
512 additional rendering cores
Lower TDP (180W vs 375W)
Score
Benchmark
FP32 (float)
GeForce GTX 1080
+116%
8873
Radeon HD 8990 OEM
4096
Graphics Card
May 2016
Release Date
Apr 2013
GeForce 10
Generation
Sea Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
1607 MHz
Base Clock
950 MHz
1733 MHz
Boost Clock
1000 MHz
1251 MHz
Memory Clock
1500 MHz
Memory
8GB
Memory Size
3GB
GDDR5X
Memory Type
GDDR5
256bit
Memory Bus
384bit
320.3GB/s
Bandwidth
288.0GB/s
Render Config
-
Compute Units
32
20
SM Count
-
2560
Shading Units
2048
160
TMUs
128
64
ROPs
32
48 KB (per SM)
L1 Cache
16 KB (per CU)
2 MB
L2 Cache
768 KB
Theoretical Performance
110.9 GPixel/s
Pixel Rate
32.00 GPixel/s
277.3 GTexel/s
Texture Rate
128.0 GTexel/s
138.6 GFLOPS
FP16 (half)
-
8.873 TFLOPS
FP32 (float)
4.096 TFLOPS
277.3 GFLOPS
FP64 (double)
1024 GFLOPS
Board Design
180W
TDP
375W
450 W
Suggested PSU
750 W
1x DVI
1x HDMI 2.0
3x DisplayPort 1.4a
Outputs
1x DVI
4x mini-DisplayPort 1.2
1x 8-pin
Power Connectors
2x 8-pin
Graphics Processor
GP104
GPU Name
Malta
GP104-400-A1
GPU Variant
Malta XT
(215-0849026)
Pascal
Architecture
GCN 1.0
TSMC
Foundry
TSMC
16 nm
Process Size
28 nm
7.2 billion
Transistors
4.313 billion
314 mm²
Die Size
365 mm²
Graphics Features
12 (12_1)
DirectX
12 (11_1)
4.6
OpenGL
4.6
3.0
OpenCL
1.2
1.3
Vulkan
1.2
6.1
CUDA
-
6.4
Shader Model
5.1
