GPU Comparison
RADEON
AMD Radeon HD 8870 OEM
CORE STATE
Pitcairn
VRAM
2 GB
CLOCK SPEED
—
TDP
175 W
BUS WIDTH
256 bit
ARCHITECTURE
GCN 1.0
PROCESS
28 nm
LAUNCH DATE
2013
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
HD 8870 OEM
GTX 1660 Ti Max-Q
Core Specs
Shading Units
1,280
1,536
+20.0%
Shaders
1,280
1,536
+20.0%
TMUs
80
96
+20.0%
ROPs
32
48
+50.0%
Compute Units
20
—
SM Count
—
24
Clocks
Base Clock
—
1140 MHz
Boost Clock
—
1335 MHz
GPU Clock
1000 MHz
—
Memory Clock
1200 MHz
4.8 Gbps effective
1500 MHz
12 Gbps effective
Memory
Memory Size
2 GB
6 GB
VRAM (MB)
2,048
6,144
+200.0%
Memory Type
GDDR5
GDDR6
Memory Bus
256 bit
192 bit
Bandwidth
153.6 GB/s
288.0 GB/s
Cache
L1 Cache
16 KB (per CU)
64 KB (per SM)
L2 Cache
512 KB
1536 KB
Performance
Pixel Rate
32.00 GPixel/s
64.08 GPixel/s
Texture Rate
80.00 GTexel/s
128.2 GTexel/s
FP32 (TFLOPS)
2.560 TFLOPS
4.101 TFLOPS
FP64 (TFLOPS)
160.0 GFLOPS (1:16)
128.2 GFLOPS (1:32)
FP16 (TFLOPS)
—
8.202 TFLOPS (2:1)
Power
TDP
175 W
—
TDP (W)
175
—
Suggested PSU
450 W
—
Power Connectors
2x 6-pin
None
Architecture
Architecture
GCN 1.0
Turing
GPU Name
Pitcairn
TU116
Generation
Sea Islands
(HD 8800)
GeForce 16 Mobile
Process Size
28 nm
12 nm
Transistors
2,800 million
6,600 million
Die Size
212 mm²
284 mm²
Foundry
TSMC
TSMC
Density
13.2M / mm²
23.2M / mm²
API Support
DirectX
12 (11_1)
12 (12_1)
OpenGL
4.6
4.6
Vulkan
1.2.170
1.4
OpenCL
2.1 (1.2)
3.0
CUDA
—
7.5
Shader Model
6.5 (5.1)
6.8
Physical
Slot Width
Dual-slot
MXM Module
Length
241 mm
9.5 inches
—
Outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Portable Device Dependent
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Other
Production
End-of-life
End-of-life
Predecessor
Southern Islands
GeForce 10 Mobile
Successor
Volcanic Islands
GeForce 20 Mobile