GPU Comparison
RADEON
AMD Radeon Pro 555X
CORE STATE
Polaris 21
VRAM
4 GB
CLOCK SPEED
—
TDP
75 W
BUS WIDTH
128 bit
ARCHITECTURE
GCN 4.0
PROCESS
14 nm
LAUNCH DATE
2018
VS
GEFORCE
GeForce GTX 660
CORE STATE
GK106
VRAM
2 GB
CLOCK SPEED
1032 MHz
TDP
140 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 555X
GTX 660
Core Specs
Shading Units
768
960
+25.0%
Shaders
768
960
+25.0%
TMUs
48
80
+66.7%
ROPs
16
24
+50.0%
Compute Units
12
—
Clocks
Base Clock
—
980 MHz
Boost Clock
—
1032 MHz
GPU Clock
907 MHz
—
Memory Clock
1470 MHz
5.9 Gbps effective
1502 MHz
6 Gbps effective
Memory
Memory Size
4 GB
2 GB
VRAM (MB)
4,096
2,048
-50.0%
Memory Type
GDDR5
GDDR5
Memory Bus
128 bit
192 bit
Bandwidth
94.08 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
14.51 GPixel/s
20.64 GPixel/s
Texture Rate
43.54 GTexel/s
82.56 GTexel/s
FP32 (TFLOPS)
1,393.2 GFLOPS
1.981 TFLOPS
FP64 (TFLOPS)
87.07 GFLOPS (1:16)
82.56 GFLOPS (1:24)
FP16 (TFLOPS)
1,393.2 GFLOPS (1:1)
—
Power
TDP
75 W
140 W
TDP (W)
75
140
+86.7%
Suggested PSU
—
300 W
Power Connectors
None
1x 6-pin
Architecture
Architecture
GCN 4.0
Kepler
GPU Name
Polaris 21
GK106
Generation
Radeon Pro Mac
(500X Series)
GeForce 600
Process Size
14 nm
28 nm
Transistors
3,000 million
2,540 million
Die Size
123 mm²
221 mm²
Foundry
GlobalFoundries
TSMC
Density
24.4M / mm²
11.5M / 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
—
229 USD
Production
End-of-life
End-of-life
Predecessor
—
GeForce 500
Successor
—
GeForce 700