AMD Radeon HD 7950 vs AMD Radeon HD 8770 OEM
We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7950 and 1024MB VRAM Radeon HD 8770 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7950 's Advantages
More VRAM (3GB vs 1024GB)
Larger VRAM bandwidth (240.0GB/s vs 96.00GB/s)
896 additional rendering cores
AMD Radeon HD 8770 OEM 's Advantages
Released 1 years and 8 months late
Lower TDP (85W vs 200W)
Score
Benchmark
FP32 (float)
Radeon HD 7950
+52%
2.867 TFLOPS
Radeon HD 8770 OEM
1.882 TFLOPS
Graphics Card
Jan 2012
Release Date
Sep 2013
Southern Islands
Generation
Sea Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
-
-
-
-
-
1250 MHz
Memory Clock
1500 MHz
Memory
3GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
128bit
240.0GB/s
Bandwidth
96.00GB/s
Render Config
28
Compute Units
14
-
-
-
1792
Shading Units
896
112
TMUs
56
32
ROPs
16
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
768 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
25.60 GPixel/s
Pixel Rate
16.80 GPixel/s
89.60 GTexel/s
Texture Rate
58.80 GTexel/s
-
-
-
2.867 TFLOPS
FP32 (float)
1.882 TFLOPS
716.8 GFLOPS
FP64 (double)
117.6 GFLOPS
Board Design
200W
TDP
85W
550 W
Suggested PSU
250 W
1x DVI
1x HDMI 1.4a
2x mini-DisplayPort 1.2
Outputs
1x DVI
1x HDMI 1.4a
2x mini-DisplayPort 1.2
2x 6-pin
Power Connectors
1x 6-pin
Graphics Processor
Tahiti
GPU Name
Bonaire
Tahiti PRO
(215-0821056)
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
352 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
