June 2, 200917 yr Hi, I run 2 EVGA 9800GTX 512mb in SLI mode. I know SLI does not help FSX. If I got one of the newer 2gb cards would that help FSX frame rates? I have a Q9550 cpu now. 8gb of ramGreg Greg Moore KFMH https://forum.pmdg.com/filedata/fetch?id=127275&d=1622041469&type=thumb
June 2, 200917 yr Hi, I run 2 EVGA 9800GTX 512mb in SLI mode. I know SLI does not help FSX. If I got one of the newer 2gb cards would that help FSX frame rates? I have a Q9550 cpu now. 8gb of ramGregOne of the newer cards may improve frame rates some, but not because it has 2GB of VRAM on it. The only difference you're likely to see with the additional VRAM above 1GB is faster texture loads when switching views or rapidly panning around, especially if you are running with a very large high-res monitor(s). That said, I doubt a Q9550 is going to be able to push a faster video card much past what you're seeing with the 9800GTX unless you're overclocking it a good bit past its 2.83 GHz stock clock speed.CheersBob ScottColonel, USAF (ret)ATP IMEL Gulfstream II-III-IV-VColorado Springs, CO Bob Scott | President and CEO, AVSIM Inc ATP Gulfstream II-III-IV-V Sys1 (MSFS20+24/XPlane12+11): AMD 9800X3D, water 2x240mm, MSI MPG X670E Carbon, 64GB GSkill 6000/30, nVidia RTX4090FE Alienware AW3821DW 38" 21:9 GSync, 2x4TB Crucial T705 PCIe5 + 2x2TB Samsung 990 SSD, EVGA 1000P2 PSU, 12.9" iPad Pro Thrustmaster TCA Boeing Yoke, TCA Airbus Sidestick, Twin TCA Airbus Throttle quads, PFC Cirrus Pedals, Coolermaster HAF932 case Sys2 (P3Dv5/v4): i9-13900KS, water 2x360mm, ASUS Z790 Hero, 32GB GSkill 7800MHz CAS36, ASUS RTX4090 Samsung 55" JS8500 4K TV@60Hz, 3x 2TB WD SN850X 1x 4TB Crucial P3 M.2 NVME SSD, EVGA 1600T2 PSU Fiber link to Yamaha RX-V467 Home Theater Receiver, Polk/Klipsch 6" bookshelf speakers, Polk 12" subwoofer, 12.9" iPad Pro PFC yoke/throttle quad/pedals with custom Hall sensor retrofit, Thermaltake View 71 case, Stream Deck XL button box Sys3 (DCS/P3Dv4/ATS/ETS): AMD 7800X3D, MSI MPG X870E Carbon, Noctua NH-D15S, 64GB GSkill 6000/30, EVGA RTX3090 Alienware AW3420DW 34" 21:9 GSync, Corsair HX1000i PSU, 4TB Crucial T705 PCIe5 + 2TB Samsung 970Evo Plus, TM TCA Officer Pack, Saitek combat pedals, TM Warthog, TM RS300 FF wheel/pedals, Coolermaster HAF XB case
June 2, 200917 yr Author I have set the overclock to 3.1. Is it worth getting a 1gb card and dumping the 2 SLI 9800's? Greg Moore KFMH https://forum.pmdg.com/filedata/fetch?id=127275&d=1622041469&type=thumb
June 3, 200917 yr I have set the overclock to 3.1. Is it worth getting a 1gb card and dumping the 2 SLI 9800's?I think you might see some marginal improvement, but I'd expect the bang for the buck to be on the underwhelming side. One thing you can try is to over or underclock the 9800s and see what difference that makes in frame rates. If pushing up the GPU clocks doesn't improve frame rates, then the CPU (or memory, or something else) is a limiting factor...putting a faster GPU in won't enable the CPU to push more triangles to it. Likewise, if a modest decrease in GPU speed doesn't produce a change in frame rates downward, then the CPU or other subsystem is already bottlenecked somewhere below the GPU speed you're operating with now, and a faster GPU isn't going to help.I don't know what effect having the two 9800s in SLI has on performance...it's well known that FSX won't take advantage of SLI capability, but what I don't know is if the overhead of the SLI config has a detrimental effect, or how much. My thoughts are based on the assumption that the two cards perform in FSX about like a single card would.That quad at 3.1 GHz and a single 9800GTX are in the ballpark for a reasonably even match between CPU and GPU in FSX. If anything, I'd expect that the GPU is already outrunning the CPU at that speed. I run an X6800 Core 2 Extreme at 3.6 GHz and an 8800GTX, and pushing up the GPU does nothing for frames in FSX. To significantly increase performance, you need to increase both together so that increased CPU throughput keeps the GPU's pipeline full without overrunning it.CheersBob ScottColonel, USAF (ret)ATP IMEL Gulfstream II-III-IV-VColorado Springs, CO Bob Scott | President and CEO, AVSIM Inc ATP Gulfstream II-III-IV-V Sys1 (MSFS20+24/XPlane12+11): AMD 9800X3D, water 2x240mm, MSI MPG X670E Carbon, 64GB GSkill 6000/30, nVidia RTX4090FE Alienware AW3821DW 38" 21:9 GSync, 2x4TB Crucial T705 PCIe5 + 2x2TB Samsung 990 SSD, EVGA 1000P2 PSU, 12.9" iPad Pro Thrustmaster TCA Boeing Yoke, TCA Airbus Sidestick, Twin TCA Airbus Throttle quads, PFC Cirrus Pedals, Coolermaster HAF932 case Sys2 (P3Dv5/v4): i9-13900KS, water 2x360mm, ASUS Z790 Hero, 32GB GSkill 7800MHz CAS36, ASUS RTX4090 Samsung 55" JS8500 4K TV@60Hz, 3x 2TB WD SN850X 1x 4TB Crucial P3 M.2 NVME SSD, EVGA 1600T2 PSU Fiber link to Yamaha RX-V467 Home Theater Receiver, Polk/Klipsch 6" bookshelf speakers, Polk 12" subwoofer, 12.9" iPad Pro PFC yoke/throttle quad/pedals with custom Hall sensor retrofit, Thermaltake View 71 case, Stream Deck XL button box Sys3 (DCS/P3Dv4/ATS/ETS): AMD 7800X3D, MSI MPG X870E Carbon, Noctua NH-D15S, 64GB GSkill 6000/30, EVGA RTX3090 Alienware AW3420DW 34" 21:9 GSync, Corsair HX1000i PSU, 4TB Crucial T705 PCIe5 + 2TB Samsung 970Evo Plus, TM TCA Officer Pack, Saitek combat pedals, TM Warthog, TM RS300 FF wheel/pedals, Coolermaster HAF XB case
June 5, 200916 yr I have set the overclock to 3.1. Is it worth getting a 1gb card and dumping the 2 SLI 9800's?The Q9550 will go much higher than 3.1 if you have an after market cooler and decent ram. I have mine at 4.05 with ease, very stable, and have had no problems. I have a 1gb gtx280. That is all you need for FSX. You will not notice any difference with more video ram unless you have an extremely high resolution monitor.Bill
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