FAQ
TL;DR: Use 1 direct DVI cable to link the MSI GTX 660 to the Samsung 931BW; “Adapters are not needed.” [Elektroda, Kasek21, post #16812288]
Why it matters: This FAQ helps PC builders connect a VGA-era monitor to a GTX 660 without image loss, confusion, or wasted adapters.
Quick Facts
- Samsung SyncMaster 931BW is a 19-inch, 1440×900 (16:10) LCD that supports DVI input. “Samsung SyncMaster 931BW specs”.
- DVI‑D carries digital only; VGA is analog, so passive VGA↔DVI‑D adapters do not work. [Elektroda, daminek1234, post #16810137]
- DVI‑I ports can transmit both digital and analog signals from the GPU. [Elektroda, Kasek21, post #16812288]
- A simple DVI cable is sufficient; adapters add cost without benefit for this setup. [Elektroda, Kasek21, post #16812288]
- Plain DVI cables are inexpensive and widely available (“a few to several zlotys”). [Elektroda, Kasek21, post #16812262]
Can I connect a VGA‑only monitor to a DVI‑D port with a cheap adapter?
No. DVI‑D outputs only digital video, while VGA needs analog. A passive adapter cannot convert formats. You would need an active converter, which adds cost and complexity. “DVI‑D only gives a digital signal.” [Elektroda, daminek1234, post #16810137]
Does the Samsung SyncMaster 931BW actually have DVI?
Yes. The 931BW includes a DVI input and supports 1440×900 native resolution. Use a DVI cable from the GPU for the sharpest image. This avoids analog signal loss and simplifies setup. ["Samsung SyncMaster 931BW specs"]
What’s the simplest working cable for GTX 660 → 931BW?
Use a direct DVI cable between the card and the monitor. “Adapters are not needed.” This gives a clean digital path and avoids compatibility issues. [Elektroda, Kasek21, post #16812288]
Should it be DVI‑D or DVI‑I cable?
Either will physically work if the connectors match; the link used is digital. The key is that the GPU and monitor DVI ports align. If the socket is DVI‑D, use a DVI‑D cable for a guaranteed fit. [Elektroda, Kasek21, post #16812241]
Will DisplayPort to DVI‑D work from the GTX 660?
Yes, a DP→DVI‑D cable can work because the card supports digital output over DP. This is handy if your DVI ports are occupied, as noted by the forum guidance. [Elektroda, Kasek21, post #16812191]
Can I chain adapters (DP→HDMI, then HDMI→DVI‑D)?
Chaining may work, but failures are common. Signal integrity and handshake issues can appear. The forum could not confirm such a chain and advised testing. “Nobody will answer you until you check it yourself.” [Elektroda, Kasek21, post #16814983]
Is VGA (D‑Sub) acceptable if I already have that cable?
You can use DVI→VGA with the right hardware, but it yields an analog image. The expert noted digital is preferable, though differences may be small on this monitor with a good cable. [Elektroda, Kasek21, post #16812288]
Quick how‑to: connect GTX 660 to 931BW the right way
- Power off PC and monitor.
- Plug a DVI cable from the GTX 660’s DVI port to the 931BW’s DVI input.
- Power on and set the monitor to DVI input; select 1440×900 in Windows. [Elektroda, Kasek21, post #16812288]
What if both my DVI and HDMI ports are already in use?
Use the GTX 660’s DisplayPort with a DP→DVI‑D cable to the 931BW. This avoids reconfiguring other displays and keeps a digital path. [Elektroda, Kasek21, post #16813042]
Why didn’t my DVI‑I to DVI‑D cable physically fit?
A DVI‑I plug has extra analog pins that a DVI‑D socket lacks. The reverse—DVI‑D cable into DVI‑I socket—fits fine. Match plug to socket type to ensure insertion. [Elektroda, daminek1234, post #16812241]
Do I need an active converter for this setup?
No active converter is needed when connecting DVI or DP to the 931BW’s DVI input. Active conversion is only for digital‑to‑analog (DVI‑D/DP to VGA). [Elektroda, Kasek21, post #16812288]
What resolution should I set after connecting?
Set 1440×900 at the monitor’s native 16:10 aspect ratio. This ensures pixel‑perfect scaling and clear text. It’s the panel’s native mode. ["Samsung SyncMaster 931BW specs"]
Is a DVI cable expensive or hard to find?
No. The forum notes DVI cables are cheap and available “EVERYWHERE,” costing only a few to several zlotys. Availability is broad online and in stores. [Elektroda, Kasek21, post #16812262]
Edge case: Why does my screen stay black over DP→DVI?
Some adapters need power or have handshake quirks. Try another DP port, reseat connections, or use a single DP→DVI cable. If chained, remove the chain first. [Elektroda, Kasek21, post #16814983]
What’s DVI‑D vs DVI‑I in plain terms?
DVI‑D carries digital signals only. DVI‑I can carry digital and analog in one connector. For the 931BW, use the digital path for best clarity. [Elektroda, Kasek21, post #16812288]
Will image quality differ between DVI and VGA on this monitor?
Digital DVI avoids analog noise and drift. The forum notes VGA can look close if you use a good cable, but DVI is the clean choice. [Elektroda, Kasek21, post #16812288]
