GPU Comparison
RADEON
AMD Radeon Pro 555
CORE STATE
Polaris 21
VRAM
2 GB
CLOCK SPEED
—
TDP
75 W
BUS WIDTH
128 bit
ARCHITECTURE
GCN 4.0
PROCESS
14 nm
LAUNCH DATE
2017
VS
GEFORCE
GeForce GTX 660 Ti
CORE STATE
GK104
VRAM
2 GB
CLOCK SPEED
980 MHz
TDP
150 W
BUS WIDTH
192 bit
ARCHITECTURE
Kepler
PROCESS
28 nm
LAUNCH DATE
2012
PERFORMANCE BENCHMARKS
geekbench_metal
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
Pro 555
GTX 660 Ti
Core Specs
Shading Units
768
1,344
+75.0%
Shaders
768
1,344
+75.0%
TMUs
48
112
+133.3%
ROPs
16
24
+50.0%
Compute Units
12
—
Clocks
Base Clock
—
915 MHz
Boost Clock
—
980 MHz
GPU Clock
850 MHz
—
Memory Clock
1275 MHz
5.1 Gbps effective
1502 MHz
6 Gbps effective
Memory
Memory Size
2 GB
2 GB
VRAM (MB)
2,048
2,048
0.0%
Memory Type
GDDR5
GDDR5
Memory Bus
128 bit
192 bit
Bandwidth
81.60 GB/s
144.2 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per SMX)
L2 Cache
1024 KB
384 KB
Performance
Pixel Rate
13.60 GPixel/s
27.44 GPixel/s
Texture Rate
40.80 GTexel/s
109.8 GTexel/s
FP32 (TFLOPS)
1,305.6 GFLOPS
2.634 TFLOPS
FP64 (TFLOPS)
81.60 GFLOPS (1:16)
109.8 GFLOPS (1:24)
FP16 (TFLOPS)
1,305.6 GFLOPS (1:1)
—
Power
TDP
75 W
150 W
TDP (W)
75
150
+100.0%
Suggested PSU
—
450 W
Power Connectors
None
2x 6-pin
Architecture
Architecture
GCN 4.0
Kepler
GPU Name
Polaris 21
GK104
Generation
Radeon Pro Mac
(500 Series)
GeForce 600
Process Size
14 nm
28 nm
Transistors
3,000 million
3,540 million
Die Size
123 mm²
294 mm²
Foundry
GlobalFoundries
TSMC
Density
24.4M / mm²
12.0M / mm²
API Support
DirectX
12 (12_0)
12 (11_0)
OpenGL
4.6
4.6
Vulkan
1.3
1.2.175
OpenCL
2.1
3.0
CUDA
—
3.0
Shader Model
6.7
6.5 (5.1)
Physical
Slot Width
IGP
Dual-slot
Length
—
241 mm
9.5 inches
Outputs
Portable Device Dependent
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Bus Interface
PCIe 3.0 x8
PCIe 3.0 x16
Other
Launch Price
—
299 USD
Production
End-of-life
End-of-life
Predecessor
—
GeForce 500
Successor
—
GeForce 700