Radeon R7 250 and GeForce GTX 285 Mac Edition - video card comparison
Radeon R7 250
GeForce GTX 285 Mac Edition
Architecture
GCN (2011−2017)
Tesla 2.0 (2007−2013)
GPU code name
Oland XT
GT200B
Market segment
Desktop
Desktop
Release date
October 2013
January 2009
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x8
PCIe 2.0 x16
Supplementary power connectors
N/A
2x 6-pin
Boost clock speed
1050 MHz
-
Core clock speed
-
648 MHz
Floating-point performance
716.8 gflops
708.5 gflops
Manufacturing process technology
28 nm
55 nm
Number of transistors
950 million
1,400 million
Pipelines / CUDA cores
384
240
Power consumption (TDP)
75 Watt
204 Watt
Texture fill rate
25.20
51.84
Memory type
DDR3, GDDR5
GDDR3
Maximum RAM amount
2 GB
1 GB
Memory bus width
128 Bit
512 Bit
Memory clock speed
1150 MHz
2484 MHz
Memory bandwidth
72 GB/s
159.0 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x VGA
2x DVI, 1x S-Video
HDMI
+
-
DisplayPort support
-
-
DirectX
DirectX® 12
11.1 (10_0)
CUDA
-
1.3
Mantle
-
-
OpenCL
1.2
1.1
OpenGL
4.6
3.3
Shader Model
5.1
4.0
Vulkan
-
N/A
AppAcceleration
+
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-