Yes Mike, it's great. ATI Overvolt seems to reset settings everytime you reboot your computer though. So what happens now is that every time I reboot, I have to quickly go to overvolt and move the sliders up before my computer becomes unstable.

Yes Mike, it's great. ATI Overvolt seems to reset settings everytime you reboot your computer though. So what happens now is that every time I reboot, I have to quickly go to overvolt and move the sliders up before my computer becomes unstable.

Try MSI Afterburner. It has an overvolt + overclock tool wrapped into one. Simply setup your voltage and clocks as you have now and save it to a profile. Then set it to apply your profile at startup (don't forget to let it run at startup too). Viola you don't have to deal with manually doing it. The cool thing is also that at a press of a button it will restore your settings to default so in case you don't want this to be a 24x7 overclock you can just press the overclock profile before you run FSX or choose to keep it up all the time.PM me if you have any questions.

Has anyone else tried this on other ATI HD series cards? I've got an HD5770, so if this works on other cards, I'll be willing to forgive the fact that ATI drivers can produce jaggies on 2D panels if I'd get some free performance :).

There is also an interesting bell curve. At clocks higher 890/1130 3D marks get lower and FSX gets slower. The sweet spot seems to be between 875-

I don't know if guys here remember, but shorty before getting my GTX 480 I got a Vapor-X 5870 which worked REALLY good, specially with BP=0, but under heavy WEATHER and with lots of scenery objects it will score lower than my GTX 285, so I ended up returning it.Unfortunately, I never had the chance to test the 5870 with the shader 3 mod, so I don't know if that could have helped. ATI's are VERY good cards because of the ammount of shader processors they have, unfortunately, the individual shader processors are 'slower' that nVidia's so, the card is GREAT for games with lots and lots of draw calls, but not so good on rendering of lots of objects at once. Like I said, I don't know if the shader 3 mod would made a difference here.Mike, are you using the BP=0 or rejectthreshold tweak? how about the shader mod?

I was running the 5870 right after you got yours, ******* - the 580 sources weren't plentiful at that time (and i couldn't wait!). Now I have it since December 20. Really - the major difference is Nvidia's better driver control via Inspector. The ATI card makes good use of the Shader v3, but it still can't handle clouds the way the 580 does, and FSX suffers a frame rate penalty because of Vsync having to be enabled in the fsx.cfg, so for my money - the 580 is the better card for FSX.

I downloaded MSI Afterburner but the voltage format in that program does not make sense! the Core Voltage of my card reads 1046! Not the stock clock at 1.05v. Stock clock #####??

I downloaded MSI Afterburner but the voltage format in that program does not make sense! the Core Voltage of my card reads 1046! Not the stock clock at 1.05v. Stock clock #####??

The read out has an extra 0 behind the decimal point; i.e: 1.046V

I don't know if guys here remember, but shorty before getting my GTX 480 I got a Vapor-X 5870 which worked REALLY good, specially with BP=0, but under heavy WEATHER and with lots of scenery objects it will score lower than my GTX 285, so I ended up returning it.Unfortunately, I never had the chance to test the 5870 with the shader 3 mod, so I don't know if that could have helped. ATI's are VERY good cards because of the ammount of shader processors they have, unfortunately, the individual shader processors are 'slower' that nVidia's so, the card is GREAT for games with lots and lots of draw calls, but not so good on rendering of lots of objects at once. Like I said, I don't know if the shader 3 mod would made a difference here.Mike, are you using the BP=0 or rejectthreshold tweak? how about the shader mod?

Hello *******:[bUFFERPOOLS]PoolSize=8388608RejectThreshold=131072UsePools=1This is what your autotune came up with. However, with bufferpools 0 I get even HIGHER performance but then the system got unstable. However, I now believe one of my 4GB OCZ Reaper sticks is bad so I ordered some new 8GB (2x4GB) G.SKILL Ripjaws today and they should get here tomorrow and will set it up again with BP0 and report back. Best regards...

Hello *******:[bUFFERPOOLS]PoolSize=8388608RejectThreshold=131072UsePools=1This is what your autotune came up with. However, with bufferpools 0 I get even HIGHER performance but then the system got unstable. However, I now believe one of my 4GB OCZ Reaper sticks is bad so I ordered some new 8GB (2x4GB) G.SKILL Ripjaws today and they should get here tomorrow and will set it up again with BP0 and report back. Best regards...

One thing to be careful now with BP=0 is that with the new SB processors a lot of frames will get pumped to the card, and even the 580's can be stalled, so RejectThreshold=131072 *IS* required in those cases... or.. well, probably a SB at 5.0Ghz will not even need a single tweak, I'll find out when they sort out the chipset problem with the retailers.What about the Shader Mod when flying in heavy weather is there any diff in perf? people swear by it, I have NEVER experienced this with my nVidia card, so must be an ATI specific thing...

The read out has an extra 0 behind the decimal point; i.e: 1.046V

so what would 1.1625v be in this format? 1165?

so what would 1.1625v be in this format? 1165?

Affirmative.

One thing to be careful now with BP=0 is that with the new SB processors a lot of frames will get pumped to the card, and even the 580's can be stalled, so RejectThreshold=131072 *IS* required in those cases... or.. well, probably a SB at 5.0Ghz will not even need a single tweak, I'll find out when they sort out the chipset problem with the retailers.What about the Shader Mod when flying in heavy weather is there any diff in perf? people swear by it, I have NEVER experienced this with my nVidia card, so must be an ATI specific thing...

The shader mod has been very hit and miss for me. I don't see any real bump with them, and because frame rates are so high I have enough overhead to pile on the clouds. Unless I'm flying with the FPS counter on there is no way I'd know!Oh, by the way, the autoinstall shader mod executable doesn't work for me. It give the error "FSX is not installed for this user."

so what would 1.1625v be in this format? 1165?

No. 1.1625v = 1163 Round up or down the last 10,000th place to the next 1,000th place. Ex: 1.1624 = 1162. 1.1626 = 1163, etc. If you are having trouble with this I would not recommend you mess around with it. As a warning you WILL fry your card if you don't understand what you are doing!!!!

Affirmative.

Please ignore the quoted.

First some background.I recently upgraded from an ATI 4890 to a 5970 and saw very little increase in FSX perforation despite the fact that performance tests show the 5970 at orders of magnitude faster as it is arguably the fastest GPU in the world (arguably). As a matter of fact performance was actually a bit worse in FSX which I attributed to the fact that it is a dual GPU card which FSX does not support.Last night I hoped to squeeze some more performance out of FSX so I tried to overclock the 5970 and it kept crashing. It would only take a very small overclock which changed nothing in FSX. With ultra settings I was averaging around 30 FPS. After doing some searching I found that the voltage needed to be bumped up in the card which I found strange since I've never had to overvolt a video card after having tweaked my systems for years. Anyway I did what I was reading in the forums and found the ATI Overvolt tool (no longer available from ATI). Now on to the tweaking.OLD SETTINGS: ATI HD5970 Stock voltage = 1.05v. Stock clock = 725mhz CORE, 1000mhz MEM.NEW SETTINGS: New voltage = 1.1625v. OC = 890mhz CORE, 1130mhz MEM.Drivers = Catalyst ver 10.12.First: Windows 7 score for the card goes from 7.6 to 7.7.3D Mark 11 (QX9650, 8GB OCX Reaper, ASUS Maximus Extreme MoBo): Pre overclock: 3600. Post overclock: 6600. Note the radical increase in score.FSX Pre Overlock average: ~30 FPS (Unlimited)FSX Post Overclock average: ~60 FPS! let me repeat (yes a 100% increase in frame rates).There is also an interesting bell curve. At clocks higher 890/1130 3D marks get lower and FSX gets slower. The sweet spot seems to be between 875-890/1100-1130. Also, at these speeds there is no issue with stability.So, don't take my word for it...as a matter of fact, assume I'm crazy and don't know what I'm talking about. But humor me and try it yourself. Then turn up the AI traffic and the cars, clouds, autogen and behold that FSX has been transformed into something else. The smoothness and fluidity combined with the ability to turn sliders wayyyy up is jaw dropping. AND may I suggest your a flight be over ORBX NW scenery (make sure you have a drool rag handy).Tools needed:HD 5970 ATI Overclock Tool -or- MSI Afterburner. Catalyst 10.12. *******' Autotweaks (I tested with *******' autotweaks to ensure that my FSX.cfg was a optimal settings.

Mike, is it safe to assume you are using the exact (ie loaded the flight rather than created the flight) flight for each comparison?Seems tough to explain. The fact that you say higher overclock above a certain point causes a downturn, makes me wonder if the entire experience isn't either or both of these two issues:1. More efficient timing between what the CPU/memory subsystem must perform and what the GPU/memory has to accomplish.2. Your video card was, somehow and I have no idea if this is even possible, starved for voltage even at the stock setting. I would guess raw GPU performance w/ this overclock can't be more than the direct proportional increase you will get from the raw increases in clock speed and memory speed of your video so as I say I'm kind of stuck with enhanced timing efficiency or voltage or both to help explain this.Noel