GeForce GTX 780 Ti Engineering Sample vs Radeon R9 390 X2
We compared two Desktop platform GPUs: 3GB VRAM GeForce GTX 780 Ti Engineering Sample and 8GB VRAM Radeon R9 390 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce GTX 780 Ti Engineering Sample Advantages
Boost Clock928MHz
320 additional rendering cores
Lower TDP (250W vs 580W)
Radeon R9 390 X2 Advantages
More VRAM (8GB vs 3GB)
Larger VRAM bandwidth (345.6GB/s vs 336.6GB/s)
Score
Benchmark
FP32 (float)
GeForce GTX 780 Ti Engineering Sample
+4%
5345
Radeon R9 390 X2
5120
Graphics Card
Unknown
Release Date
Sep 2015
GeForce 700
Generation
Pirate Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
875 MHz
Base Clock
-
928 MHz
Boost Clock
-
1753 MHz
Memory Clock
1350 MHz
Memory
3GB
Memory Size
8GB
GDDR5
Memory Type
GDDR5
384bit
Memory Bus
512bit
336.6GB/s
Bandwidth
345.6GB/s
Render Config
-
Compute Units
40
2880
Shading Units
2560
240
TMUs
160
48
ROPs
64
16 KB (per SMX)
L1 Cache
16 KB (per CU)
1536 KB
L2 Cache
1024 KB
Theoretical Performance
55.68 GPixel/s
Pixel Rate
64.00 GPixel/s
222.7 GTexel/s
Texture Rate
160.0 GTexel/s
5.345 TFLOPS
FP32 (float)
5.120 TFLOPS
222.7 GFLOPS
FP64 (double)
640.0 GFLOPS
Board Design
250W
TDP
580W
600 W
Suggested PSU
950 W
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
1x HDMI 1.4a
1x DisplayPort 1.2
Outputs
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
1x HDMI 1.4a
1x DisplayPort 1.2
1x 6-pin + 1x 8-pin
Power Connectors
4x 8-pin
Graphics Processor
GK180
GPU Name
Grenada
GK180-425-A1
GPU Variant
Grenada PRO
(215-0880030)
(215-0880030)
Kepler
Architecture
GCN 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
7.08 billion
Transistors
6.2 billion
561 mm²
Die Size
438 mm²
Graphics Features
12 (11_0)
DirectX
12 (12_0)
4.6
OpenGL
4.6
3.0
OpenCL
2.0
1.2.175
Vulkan
1.2
3.5
CUDA
-
5.1
Shader Model
6.3