HD-645X-ZQH2
FX-777A-ZDB4
RX-570-ARMOR-4G-OC
R7-240-2GD3-LP
Basic Info
Brand
XFX
XFX
MSI
MSI
Model
HD-645X-ZQH2
FX-777A-ZDB4
RX-570-ARMOR-4G-OC
R7 240 2GD3 LP
Interface
Interface
PCI Express 2.1 x16
PCI Express 3.0 x16
PCI Express 3.0 x16
PCI Express 3.0 x16
Chipset
Chipset Manufacturer
AMD
AMD
AMD
AMD
GPU Series
False
False
AMD Radeon RX 500 Series
AMD Radeon R7 200 Series
GPU
Radeon HD 6450
Radeon HD 7770
Radeon RX 570
Radeon R7 240
Core Clock
650 MHz
1095 MHz
1268 MHz
730 MHz
Boost Clock
False
False
False
780 MHz
Shader Clock
False
False
False
False
CUDA Cores
False
False
False
False
Stream Processors
160
640
2048
False
Memory
Effective Memory Clock
1066 MHz
1245 MHz
7000 MHz
1800 MHz
Memory Size
1GB
1GB
4GB
2GB
Memory Interface
64-Bit
128-Bit
256-Bit
128-Bit
Memory Type
DDR3
GDDR5
GDDR5
DDR3
3D API
DirectX
DirectX 11
DirectX 11
DirectX 12
DirectX 12
OpenGL
OpenGL 4.1
OpenGL 4.2
OpenGL 4.5
OpenGL 4.3
Display Connectors
VGA Connection
False
False
False
False
D-SUB Connection
1
False
False
1
DVI Connection
1
2
1
1
HDMI Connection
1
1
1
1
DisplayPort Connection
False
1
3
False
Multi-Monitor Support
3
False
4
False
More Details
RAMDAC
400 MHz
400 MHz
False
400 MHz
Max Resolution (Digital)
2560 x 1600
False
False
False
Max Resolution (Analog)
2048 x 1536
False
False
False
SLI Support
False
False
False
False
Cooler
Fanless
With Fan
With Fan
With Fan
Power Connector
False
6-Pin
8-Pin
False
Operating Systems Supported
False
False
False
False
Recommended PSU
400W or greater
450W or greater
450W
False
Dual-Link DVI Supported
1
1
1
False
HDCP Ready
1
1
1
1
Eyefinity Support
False
1
1
False
CrossFireX Support
False
1
1
False
Virtual Reality Ready
False
False
False
False
Form Factor & Dimensions
Form Factor
Low Profile Ready
False
ATX
Low Profile
Max GPU Length
False
False
246 mm
False
Card Dimensions (L x H)
7.13" x 3.19" x 1.1"
8.8" x 4.4" x 1.5"
9.69" x 5.12"
5.67" x 2.72"
Slot Width
False
False
False
Single Slot
