Sapphire Radeon R9 280X 2 Monitors 1 HDTV

MelTorefas

Distinguished
Jan 12, 2012
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So, I bought a Sapphire Radeon 280X last year to replace a failing HD 7970 in my 4+ year old system. It has worked fine thus far running two identical ViewSonic monitors from its two DVI ports. Today I got an HDTV from a friend who is moving, and tried hooking it up to the card's HDMI port, but it seems it will not allow me to run both monitors and the HDTV at the same time. I can do the two monitors, or one monitor and the HDTV.

I spent a couple hours searching around online, and have found a lot of contradictory information. Some posts indicate this sort of setup requires an active displayport adapter, some say a passive one will work, some even say no adapter should be necessary.

From what I have encountered I assume a displayport adapter IS necessary, but I would like to verify that this is true and also verify whether it should be active or passive. This is new territory for me, so any help would be appreciated.

OS: Windows 7 Professional 64bit
CPU: Intel i5 2500k
Monitors: 2x ViewSonic VX2450 series
HDTV: JVC JLC47BC3002
GPU (from listing): SAPPHIRE Radeon R9 280X 11221-00-CPO 3GB 384-Bit GDDR5 PCI Express 3.0 CrossFire

Full info from Radeon Settings
Graphics Card Manufacturer - Powered by AMD
Graphics Chipset - AMD Radeon R9 200 Series
Device ID - 6798
Vendor ID - 1002
SubSystem ID - 3001
SubSystem Vendor ID - 174B
Revision ID - 00
Bus Type - PCI Express 3.0
Current Bus Settings - PCI Express 2.0 x16
BIOS Version - 015.041.000.000
BIOS Part Number - 113-5E24900-O46
BIOS Date - 2013/11/27 01:36
Memory Size - 3072 MB
Memory Type - GDDR5
Memory Clock - 1500 MHz
Core Clock - 1020 MHz
Total Memory Bandwidth - 288 GByte/s
2D Driver File Path - /REGISTRY/MACHINE/SYSTEM/ControlSet001/Control/Class/{4d36e968-e325-11ce-bfc1-08002be10318}/0000