NVIDIA GeForce GTX 780 Ti Engineering Sample vs AMD Radeon R9 390X
GPU · Specs Compare
Graphics Card
Release Date
Unknown
Jun 2015
Generation
GeForce 700
Pirate 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
1500 MHz
Memory
Memory Size
3GB
8GB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
512bit
Bandwidth
336.6GB/s
384.0GB/s
Render Config
Shading Units
2880
2816
TMUs
240
176
ROPs
48
64
L1 Cache
16 KB (per SMX)
16 KB (per CU)
L2 Cache
1536 KB
1024 KB
Compute Units
—
44
Theoretical Performance
Pixel Rate
55.68 GPixel/s
67.20 GPixel/s
Texture Rate
222.7 GTexel/s
184.8 GTexel/s
FP32 (float)
5.345 TFLOPS
5.914 TFLOPS
FP64 (double)
222.7 GFLOPS
739.2 GFLOPS
Graphics Processor
GPU Name
GK180
Grenada
GPU Variant
GK180-425-A1
Grenada XT(215-0880004)
Architecture
Kepler
GCN 2.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
7.08 billion
6.2 billion
Die Size
561 mm²
438 mm²
Board Design
TDP
250W
275W
Suggested PSU
600 W
600 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
1x 6-pin + 1x 8-pin
Graphics Features
DirectX
12 (11_0)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
3.0
2.0
Vulkan
1.2.175
1.2
CUDA
3.5
—
Shader Model
5.1
6.3
▲ Specs Compare
Data sourced from official specifications and benchmark tests.