NVIDIA GeForce GTX 780 Ti vs AMD Radeon R9 285
GPU · Specs Compare
Graphics Card
Release Date
Nov 2013
Sep 2014
Generation
GeForce 700
Volcanic Islands
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
875 MHz
—
Boost Clock
928 MHz
—
Memory Clock
1753 MHz
1375 MHz
Memory
Memory Size
3GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
256bit
Bandwidth
336.6GB/s
176.0GB/s
Render Config
Shading Units
2880
1792
TMUs
240
112
ROPs
48
32
L1 Cache
16 KB (per SMX)
16 KB (per CU)
L2 Cache
1536 KB
512 KB
Compute Units
—
28
Theoretical Performance
Pixel Rate
55.68 GPixel/s
29.38 GPixel/s
Texture Rate
222.7 GTexel/s
102.8 GTexel/s
FP32 (float)
5.345 TFLOPS
3.290 TFLOPS
FP64 (double)
222.7 GFLOPS
205.6 GFLOPS
FP16 (half)
—
3.290 TFLOPS
Graphics Processor
GPU Name
GK110B
Tonga
GPU Variant
GK110-425-B1
Tonga PRO(215-0851128)
Architecture
Kepler
GCN 3.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
7.08 billion
5 billion
Die Size
561 mm²
366 mm²
Board Design
TDP
250W
190W
Suggested PSU
600 W
450 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
1x 6-pin + 1x 8-pin
2x 6-pin
Graphics Features
DirectX
12 (11_1)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
3.0
2.1
Vulkan
1.2.175
1.2.170
CUDA
3.5
—
Shader Model
6.5 (5.1)
6.5
▲ Specs Compare
Data sourced from official specifications and benchmark tests.