Okay. I'm going to start off with this.. I don't want any comments on how
"Minecraft doesn't need that, its not that demanding"
If you're not going to help, just don't post. The reason I want it is because I'm running GLSL shaders -which are demanding.
Anyway.
My specs are.
Intel Quad Core Duo Q9950 (2.8Ghz/per)
2-Way SLI nVidia GTS 450
4 GB RAM
SLI is enabled in my nvidia control panel, but If I monitor my GPUs, one is at 50% and the other is at 0%.
I'm only getting like 30 FPS with GLSL shaders on.
I was wondering if anyone knows:
1) Why my GPU is only working at 50%, instead of working harder to get a decent fps
EDIT: Closer monitering shows my 1st GPU does work at a reasonable % when full-screened. It was only at 50% because Minecraft was getting 60fps anyway. I still need help with #2 though.
2) Why Minecraft is not using SLI, so my second GPU is at 0%
I am not a expert but I think that can be really easy explained .
Minecraft works on java , not like most other games c++ , and that is why most of the processing power go on the main processor , and not in to the graphic card , that is also why your SLI don't work .
Minecraft is rendered in OpenGL, which SLI is compatible with. The actual rendering and shader processes are done on the GPUs. My problem is that it is only using one GPU, instead of both.
In the OptiFine control panel do you have vsync on by any chance? I noticed you said 60 fps, which is the standard for most monitors. The reason I am wondering is because I have SLI on my computer and get about 2100 fps, which is way over 60 fps.
In the OptiFine control panel do you have vsync on by any chance? I noticed you said 60 fps, which is the standard for most monitors. The reason I am wondering is because I have SLI on my computer and get about 2100 fps, which is way over 60 fps.
Yes I've got optifine, but vsync is off ~60fps is just a coincidence. If I fullscreen it, I only get 30 fps.
How did you get SLI enabled for it?
When you load up a Minecraft world and put it on far render distance, do you see the red text that x64 Java is recommended or do you have x64 Java installed. In the nVidia control panel do you have SLI enabled?
When you load up a Minecraft world and put it on far render distance, do you see the red text that x64 Java is recommended or do you have x64 Java installed. In the nVidia control panel do you have SLI enabled?
I'm running 64 bit java, and SLI is enabled.
I just got it to run both GPUs, but for some reason, in game, I got 0 increase in performance.
You could always try a fresh copy of Minecraft as a last resort. Sorry. I don't have any ideas. My computer worked out of the box after I installed Windows 7 and upgraded everything.
You could always try a fresh copy of Minecraft as a last resort. Sorry. I don't have any ideas. My computer worked out of the box after I installed Windows 7 and upgraded everything.
Without the shaders (vanilla), I get between 120-600 fps, before I had SLI
Since minecraft doesn't natively support SLI, force the frames to render on alternating graphics cards with SLI Rendering mode set to "Force alternate frame rendering 2".
Also if anyone knows what the difference between alternate 1 and alternate 2 is, please let me know
"Minecraft doesn't need that, its not that demanding"
If you're not going to help, just don't post. The reason I want it is because I'm running GLSL shaders -which are demanding.
Anyway.
My specs are.
Intel Quad Core Duo Q9950 (2.8Ghz/per)
2-Way SLI nVidia GTS 450
4 GB RAM
SLI is enabled in my nvidia control panel, but If I monitor my GPUs, one is at 50% and the other is at 0%.
I'm only getting like 30 FPS with GLSL shaders on.
I was wondering if anyone knows:
1) Why my GPU is only working at 50%, instead of working harder to get a decent fps
EDIT: Closer monitering shows my 1st GPU does work at a reasonable % when full-screened. It was only at 50% because Minecraft was getting 60fps anyway. I still need help with #2 though.
2) Why Minecraft is not using SLI, so my second GPU is at 0%
Minecraft is rendered in OpenGL, which SLI is compatible with. The actual rendering and shader processes are done on the GPUs. My problem is that it is only using one GPU, instead of both.
True. Though I've heard that people have gotten it to work. Hopefully someone has an answer... :/
Yes I've got optifine, but vsync is off ~60fps is just a coincidence. If I fullscreen it, I only get 30 fps.
How did you get SLI enabled for it?
I'm running 64 bit java, and SLI is enabled.
I just got it to run both GPUs, but for some reason, in game, I got 0 increase in performance.
Runs every other game perfect.
It runs Battlefield 3 on Ultra settings at 1280-1024 with 0 lag.
Edit:
Drivers are all up to date.
What are your settings in the control panel?
Without the shaders (vanilla), I get between 120-600 fps, before I had SLI
Thats what I've got it at :1
Ugh.
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Curse PremiumAlso if anyone knows what the difference between alternate 1 and alternate 2 is, please let me know