GPU Comparison
RADEON
ATI Radeon HD 4855
CORE STATE
RV770
VRAM
512 MB
CLOCK SPEED
—
TDP
110 W
BUS WIDTH
256 bit
ARCHITECTURE
TeraScale
PROCESS
55 nm
LAUNCH DATE
2010
VS
GEFORCE
GeForce GTX 1660 Ti Max-Q
CORE STATE
TU116
VRAM
6 GB
CLOCK SPEED
1335 MHz
TDP
—
BUS WIDTH
192 bit
ARCHITECTURE
Turing
PROCESS
12 nm
LAUNCH DATE
2019
DETAILED SPECIFICATIONS
SPECIFICATION
ATI Radeon HD 4855
GTX 1660 Ti Max-Q
Core Specs
Shading Units
640
1,536
+140.0%
Shaders
640
1,536
+140.0%
TMUs
32
96
+200.0%
ROPs
16
48
+200.0%
Compute Units
8
—
SM Count
—
24
Clocks
Base Clock
—
1140 MHz
Boost Clock
—
1335 MHz
GPU Clock
575 MHz
—
Memory Clock
900 MHz
3.6 Gbps effective
1500 MHz
12 Gbps effective
Memory
Memory Size
512 MB
6 GB
VRAM (MB)
512
6,144
+1100.0%
Memory Type
GDDR5
GDDR6
Memory Bus
256 bit
192 bit
Bandwidth
115.2 GB/s
288.0 GB/s
Cache
L1 Cache
16 KB (per CU)
64 KB (per SM)
L2 Cache
256 KB
1536 KB
Performance
Pixel Rate
9.200 GPixel/s
64.08 GPixel/s
Texture Rate
18.40 GTexel/s
128.2 GTexel/s
FP32 (TFLOPS)
736.0 GFLOPS
4.101 TFLOPS
FP64 (TFLOPS)
147.2 GFLOPS (1:5)
128.2 GFLOPS (1:32)
FP16 (TFLOPS)
—
8.202 TFLOPS (2:1)
Power
TDP
110 W
—
TDP (W)
110
—
Suggested PSU
300 W
—
Power Connectors
1x 6-pin
None
Architecture
Architecture
TeraScale
Turing
GPU Name
RV770
TU116
Generation
Radeon R700
(HD 4800)
GeForce 16 Mobile
Process Size
55 nm
12 nm
Transistors
956 million
6,600 million
Die Size
256 mm²
284 mm²
Foundry
TSMC
TSMC
Density
3.7M / mm²
23.2M / mm²
API Support
DirectX
10.1 (10_1)
12 (12_1)
OpenGL
3.3
4.6
Vulkan
—
1.4
OpenCL
1.1
3.0
CUDA
—
7.5
Shader Model
4.1
6.8
Physical
Slot Width
Dual-slot
MXM Module
Length
220 mm
8.7 inches
—
Outputs
1x DVI1x HDMI 1.3a1x VGA
Portable Device Dependent
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Other
Production
End-of-life
End-of-life
Predecessor
Radeon R600
GeForce 10 Mobile
Successor
Evergreen
GeForce 20 Mobile