Home GPU Comparison AMD Radeon HD 8990 OEM vs AMD Radeon HD 7790

AMD Radeon HD 8990 OEM vs AMD Radeon HD 7790

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 8990 OEM and 1024MB VRAM Radeon HD 7790 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8990 OEM 's Advantages
Boost Clock1000MHz
More VRAM (3GB vs 1024GB)
Larger VRAM bandwidth (288.0GB/s vs 96.00GB/s)
1152 additional rendering cores
AMD Radeon HD 7790 's Advantages
Lower TDP (85W vs 375W)

Score

Benchmark

FP32 (float)
Radeon HD 8990 OEM +128%
4.096 TFLOPS
Radeon HD 7790
1.792 TFLOPS
VS

Graphics Card

Apr 2013
Release Date
Mar 2013
Sea Islands
Generation
Southern Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16

Clock Speeds

950 MHz
Base Clock
-
1000 MHz
Boost Clock
-
1500 MHz
Memory Clock
1500 MHz

Memory

3GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
128bit
288.0GB/s
Bandwidth
96.00GB/s

Render Config

32
Compute Units
14
-
-
-
2048
Shading Units
896
128
TMUs
56
32
ROPs
16
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
768 KB
L2 Cache
256 KB
-
-
-

Theoretical Performance

32.00 GPixel/s
Pixel Rate
16.00 GPixel/s
128.0 GTexel/s
Texture Rate
56.00 GTexel/s
-
-
-
4.096 TFLOPS
FP32 (float)
1.792 TFLOPS
1024 GFLOPS
FP64 (double)
112.0 GFLOPS

Board Design

375W
TDP
85W
750 W
Suggested PSU
250 W
1x DVI 4x mini-DisplayPort 1.2
Outputs
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
2x 8-pin
Power Connectors
1x 6-pin

Graphics Processor

Malta
GPU Name
Bonaire
Malta XT (215-0849026)
GPU Variant
Bonaire XT (215-0839039)
GCN 1.0
Architecture
GCN 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
4.313 billion
Transistors
2.08 billion
365 mm²
Die Size
160 mm²

Graphics Features

12 (11_1)
DirectX
12 (12_0)
4.6
OpenGL
4.6
1.2
OpenCL
2.0
1.2
Vulkan
1.2
-
-
-
5.1
Shader Model
6.3

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