GPU Comparison
RADEON
AMD Radeon HD 7790
CORE STATE
Bonaire
VRAM
1024 MB
CLOCK SPEED
—
TDP
85 W
BUS WIDTH
128 bit
ARCHITECTURE
GCN 2.0
PROCESS
28 nm
LAUNCH DATE
2013
VS
RADEON
Radeon HD 7950
CORE STATE
Tahiti
VRAM
3 GB
CLOCK SPEED
—
TDP
200 W
BUS WIDTH
384 bit
ARCHITECTURE
GCN 1.0
PROCESS
28 nm
LAUNCH DATE
2012
PERFORMANCE BENCHMARKS
geekbench_metal
DETAILED SPECIFICATIONS
SPECIFICATION
HD 7790
HD 7950
Core Specs
Shading Units
896
1,792
+100.0%
Shaders
896
1,792
+100.0%
TMUs
56
112
+100.0%
ROPs
16
32
+100.0%
Compute Units
14
28
+100.0%
Clocks
GPU Clock
1000 MHz
800 MHz
Memory Clock
1500 MHz
6 Gbps effective
1250 MHz
5 Gbps effective
Memory
Memory Size
1024 MB
3 GB
VRAM (MB)
1,024
3,072
+200.0%
Memory Type
GDDR5
GDDR5
Memory Bus
128 bit
384 bit
Bandwidth
96.00 GB/s
240.0 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
256 KB
768 KB
Performance
Pixel Rate
16.00 GPixel/s
25.60 GPixel/s
Texture Rate
56.00 GTexel/s
89.60 GTexel/s
FP32 (TFLOPS)
1.792 TFLOPS
2.867 TFLOPS
FP64 (TFLOPS)
112.0 GFLOPS (1:16)
716.8 GFLOPS (1:4)
Power
TDP
85 W
200 W
TDP (W)
85
200
+135.3%
Suggested PSU
250 W
550 W
Power Connectors
1x 6-pin
2x 6-pin
Architecture
Architecture
GCN 2.0
GCN 1.0
GPU Name
Bonaire
Tahiti
Generation
Southern Islands
(HD 7700)
Southern Islands
(HD 7900)
Process Size
28 nm
28 nm
Transistors
2,080 million
4,313 million
Die Size
160 mm²
352 mm²
Foundry
TSMC
TSMC
Density
13.0M / mm²
12.3M / mm²
API Support
DirectX
12 (12_0)
12 (11_1)
OpenGL
4.6
4.6
Vulkan
1.2.170
1.2.170
OpenCL
2.1
2.1 (1.2)
Shader Model
6.5
6.5 (5.1)
Physical
Slot Width
Dual-slot
Dual-slot
Length
183 mm
7.2 inches
278 mm
10.9 inches
Height
—
111 mm
4.4 inches
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Other
Launch Price
149 USD
449 USD
Production
End-of-life
End-of-life
Predecessor
Northern Islands
Northern Islands
Successor
Sea Islands
Sea Islands