[Lindsayts]

Over the past few days I have found I have very likely given some miss leading information on OR's performance. The figures being seemly way to low. The reason for this is I did not apreciate the effect of a 2560x1600 single monitor on the graphics card. A couple of tests shows such a monitor will reduce the frame rate compared to a 1920x1200 by around 30 to 40 percent, eg if one is getting a frame rate of say 60 fps with the 2560 one would expect between 90 to 100 with the 1920x1200.

I knew one need a decent amount of steam to drive one of these things, I did not give a thought to how much, looks like I will be looking for a NVidia GTX 680 for my new system so one can get decent frame rate on routes like the Bernina Bahn and the SOB.

Lindsay

[captain_bazza]

I run mine OK @ 1080p height x 1920 width @ 120Hz on my ASUS 27" LCD/LED monitor, driven by an EVGA NVidia GTX550 Ti 1GB card. FPS is around 50 and seems smooth. However, an update is on the cards (pardon pun) because I don't have to buy a new computer box, so a really good video card is now affordable.

Cheers Bazza

PS My system runs on XP SP3, so I wouldn't get the full benefit of the new card, but it would still be an improvement.

[Lindsayts]

captain_bazza, on 20 April 2013 - 06:58 PM, said:

I run mine OK @ 1080p height x 1920 width @ 120Hz on my ASUS 27" LCD/LED monitor, driven by an EVGA NVidia GTX550 Ti 1GB card. FPS is around 50 and seems smooth. However, an update is on the cards (pardon pun) because I don't have to buy a new computer box, so a really good video card is now affordable.

Cheers Bazza

PS My system runs on XP SP3, so I wouldn't get the full benefit of the new card, but it would still be an improvement.

I run XP sp3 also, on one of my systems......

MB ASUS P6X58D Premium, 3 memory channels
CPU i7 940

I went from a Radeon HD5870 to a HD 7870, result was around a 30 percent improvement in the frame rate.

So you may be surprised, I certainly was!

Lindsay

[Lindsayts]

nyc01, on 20 April 2013 - 07:21 PM, said:

Not in my experience going from the GTX 580 to the GTX 680, very little or no frame rate hit between 1920x1080 to 2560x1440 on a 27” to 2560x1600 on a 30”.

I did see an improvement in super-sampling AA performance between the GTX 580 and GTX 680 and high AA levels with the Titan and OpenRails seem to have no effect at all on the video card.

Your monitor must have scaling options, so why not post some screen shots showing the frame rate using 1920x1200 resolution vs. 2560x1600?

Testing the 30 inch in this way is my next step, the monitor concerned is a HP ZR30w, and will correctly run 1920x1200 full screen. The previous test was between 2 systems both ASUS P6X58D Premium MB's. The first with an NVidia GTX 560TI SOC driving an 1920x1200 monitor. The second with an Radeon 7870 driving the HP. I do not normally run windows on the small monitor and I was stunned to find the frame rate so high. I put up this thread to make sure anyone concerned could check the data with there own experience.

Due to a couple of minor failures in two of my systems I am currently around three parts of the way through rebuilding all my systems and have yet to completely configure both the Kernel (I run linux and compile my own kernels) and the X server on two of them so I have had not much time for testing OR.

Lindsay