I've been playing around with intensity setting in cgminer and noted on a 7870 when I went to I=13 I was suddenly getting mostly rejections.
So besides affecting hash rate, can a suboptimal intensity also lead to high rejection rates?
Topic: What is Intensity & Best Intensity Settings? (5830, 5850, 6870 and 7970) CGMine (Read 35436 times)
March 31, 2013, 01:09:30 PM
August 24, 2012, 10:32:26 PM
Intensity is the amount of work in one go the GPU has to do before it can return its results. It needs to be large enough to keep the device fully utilised yet not so overloaded that the device becomes unresponsive. The faster the GPU, the higher the sweet spot is. Ram is of no use to mining whatsoever. They could even mine fine with only a few MB of ram.
pretty sure most people will run into a roadblock with their CPU before their GPU. you could keep increasing it and get some infinitesimally higher results except your cpu will hit 100% usage
i have 4 5870's on a single core sempron that i run at agg 7 in phoenix, because at agg 8 the cpu is 100%
August 24, 2012, 09:46:28 PM
Intensity is the amount of work in one go the GPU has to do before it can return its results. It needs to be large enough to keep the device fully utilised yet not so overloaded that the device becomes unresponsive. The faster the GPU, the higher the sweet spot is. Ram is of no use to mining whatsoever. They could even mine fine with only a few MB of ram.
pretty sure most people will run into a roadblock with their CPU before their GPU. you could keep increasing it and get some infinitesimally higher results except your cpu will hit 100% usage
i have 4 5870's on a single core sempron that i run at agg 7 in phoenix, because at agg 8 the cpu is 100%
August 20, 2012, 01:14:15 AM
Intensity = 7 yields the best results with 7xxx cards if you underclock the memory below 300MHz.
For example,
7970 (1050/170):
I=7 → 620 Mh/s
I=9 → 614 Mh/s
The same goes for my 7950 (1100/170):
I=7 → 570 Mh/s
I=9 → 565 Mh/s
For example,
7970 (1050/170):
I=7 → 620 Mh/s
I=9 → 614 Mh/s
The same goes for my 7950 (1100/170):
I=7 → 570 Mh/s
I=9 → 565 Mh/s
August 19, 2012, 11:07:41 PM
Ok. I don't use the PC, so there is no problem with the graphic mode. I access it by SSH, and on SSH it is very responsive. On the GUI it is completely unresponsive, but I don't care. What I'm looking for is to increase the MH/s of my computer. Right now it is almost equal to intensity 8, but I need to wait a little more time.
He doesn't mean that the GPU becomes unresponsive when it tries drawing the desktop; he means that it becomes unresponsive when cgminer tries to give it new work. Thus your rejects will most likely be higher than if you were to use it with about 8 intensity.Oh!! I see!! What is the best intensity for ati hd 5850? 8 or 9 or other? thanks
Anywhere from 6 - 8 will get you the same results, within about 1%. 9 or higher is really only worth it on 7xxx cards.
August 19, 2012, 11:03:15 PM
Ok. I don't use the PC, so there is no problem with the graphic mode. I access it by SSH, and on SSH it is very responsive. On the GUI it is completely unresponsive, but I don't care. What I'm looking for is to increase the MH/s of my computer. Right now it is almost equal to intensity 8, but I need to wait a little more time.
He doesn't mean that the GPU becomes unresponsive when it tries drawing the desktop; he means that it becomes unresponsive when cgminer tries to give it new work. Thus your rejects will most likely be higher than if you were to use it with about 8 intensity.Oh!! I see!! What is the best intensity for ati hd 5850? 8 or 9 or other? thanks
August 19, 2012, 09:04:11 PM
Ok. I don't use the PC, so there is no problem with the graphic mode. I access it by SSH, and on SSH it is very responsive. On the GUI it is completely unresponsive, but I don't care. What I'm looking for is to increase the MH/s of my computer. Right now it is almost equal to intensity 8, but I need to wait a little more time.
He doesn't mean that the GPU becomes unresponsive when it tries drawing the desktop; he means that it becomes unresponsive when cgminer tries to give it new work. Thus your rejects will most likely be higher than if you were to use it with about 8 intensity. August 19, 2012, 08:56:38 PM
Can you explain me why it is better 8 or 9 than 14?
Thanks
Thanks
This.
Intensity is the amount of work in one go the GPU has to do before it can return its results. It needs to be large enough to keep the device fully utilised yet not so overloaded that the device becomes unresponsive. The faster the GPU, the higher the sweet spot is. Ram is of no use to mining whatsoever. They could even mine fine with only a few MB of ram.
Ok. I don't use the PC, so there is no problem with the graphic mode. I access it by SSH, and on SSH it is very responsive. On the GUI it is completely unresponsive, but I don't care. What I'm looking for is to increase the MH/s of my computer. Right now it is almost equal to intensity 8, but I need to wait a little more time.
August 19, 2012, 08:51:55 PM
Can you explain me why it is better 8 or 9 than 14?
Thanks
Thanks
This.
Intensity is the amount of work in one go the GPU has to do before it can return its results. It needs to be large enough to keep the device fully utilised yet not so overloaded that the device becomes unresponsive. The faster the GPU, the higher the sweet spot is. Ram is of no use to mining whatsoever. They could even mine fine with only a few MB of ram.
August 19, 2012, 08:49:00 PM
Can you explain me why it is better 8 or 9 than 14?
Thanks
Thanks
I have 14 intensitiy, the asus at 900Mhz Engine 360 RAM, the sapphire at 855Mhz Engine 360 RAM
Might wanna drop that to about 8 or 9.
August 19, 2012, 01:19:38 PM
windows 7 x64 sp1
cgminer 2.7.0
11.12+ocl from 11.11
5870,5850,5850,5770 core2duo e4400 stock , int for all 8, if 8,8,8,9 = cpu bag
11.12+sdk from 12.4
5870,5850,6970,7970 sempron 145 ucc off, int for all 9, if 9,9,9,10 = cpu bag
cgminer 2.7.0
11.12+ocl from 11.11
5870,5850,5850,5770 core2duo e4400 stock , int for all 8, if 8,8,8,9 = cpu bag
11.12+sdk from 12.4
5870,5850,6970,7970 sempron 145 ucc off, int for all 9, if 9,9,9,10 = cpu bag
August 19, 2012, 12:49:48 PM
I have 14 intensitiy, the asus at 900Mhz Engine 360 RAM, the sapphire at 855Mhz Engine 360 RAM
Might wanna drop that to about 8 or 9. August 19, 2012, 12:19:29 PM
I'm using a dedicated rig with 2 ATI 5850 cards, one of sapphire, the other asus.
I have 14 intensitiy, the asus at 900Mhz Engine 360 RAM, the sapphire at 855Mhz Engine 360 RAM
I'm getting about 370MH/s on each card. The temperature is around 69-71 ºC, with 75% fan.
The computer has 7 fans (low noise fans, the most lousy fan is the sapphire's one) And I'm also using the heat to warm my house so it is lower power consumption than using a heater but still get enough heat. And it is paying itself the energy costs plus generating some profit.
This is on Ubuntu 12.04 x86_64 with cgminer 2.5.0
I have 14 intensitiy, the asus at 900Mhz Engine 360 RAM, the sapphire at 855Mhz Engine 360 RAM
I'm getting about 370MH/s on each card. The temperature is around 69-71 ºC, with 75% fan.
The computer has 7 fans (low noise fans, the most lousy fan is the sapphire's one) And I'm also using the heat to warm my house
so it is lower power consumption than using a heater but still get enough heat. And it is paying itself the energy costs plus generating some profit.This is on Ubuntu 12.04 x86_64 with cgminer 2.5.0
June 12, 2012, 07:55:42 AM
Intensity is the amount of work in one go the GPU has to do before it can return its results. It needs to be large enough to keep the device fully utilised yet not so overloaded that the device becomes unresponsive. The faster the GPU, the higher the sweet spot is. Ram is of no use to mining whatsoever. They could even mine fine with only a few MB of ram.
THANK YOU. That is what I was looking for. Makes sense.
It should. It's his program
June 12, 2012, 02:18:07 AM
Intensity is the amount of work in one go the GPU has to do before it can return its results. It needs to be large enough to keep the device fully utilised yet not so overloaded that the device becomes unresponsive. The faster the GPU, the higher the sweet spot is. Ram is of no use to mining whatsoever. They could even mine fine with only a few MB of ram.
THANK YOU. That is what I was looking for. Makes sense.
June 12, 2012, 12:34:16 AM
Mining using CGMiner on Win7 x64 Rigs, I use the following Intensity for the same cards you listed:
5830 - 8
5850 - 8
6870 - 8
7970 - 9
I actually mine just fine with my 6870 on 9 intensity and it currently has fewer rejects than my display 6870 running on dynamic (16 out of 13,510 vs 29 out of 12,096). Granted, mine is overclocked a bit so it's running at ~311 MH/s. 5830 - 8
5850 - 8
6870 - 8
7970 - 9
June 11, 2012, 11:56:59 PM
Intensity is the amount of work in one go the GPU has to do before it can return its results. It needs to be large enough to keep the device fully utilised yet not so overloaded that the device becomes unresponsive. The faster the GPU, the higher the sweet spot is. Ram is of no use to mining whatsoever. They could even mine fine with only a few MB of ram.
June 11, 2012, 09:52:39 PM
If i add RAM to the boxes, will that allow a higher intensity with better results? I still don't understand how it helps and hurts performance? much appreciated if you could.
D
D
June 11, 2012, 09:46:57 PM
Those are the best settings for Intensity on a DEDICATED Windows Miner....no need for fine tuning.
For a Desktop Miner that you also surf/play/work on, I suggest using DYNAMIC (D) Intensity.
For a Desktop Miner that you also surf/play/work on, I suggest using DYNAMIC (D) Intensity.
June 11, 2012, 06:45:56 PM
Mining using CGMiner on Win7 x64 Rigs, I use the following Intensity for the same cards you listed:
5830 - 8
5850 - 8
6870 - 8
7970 - 9
5830 - 8
5850 - 8
6870 - 8
7970 - 9
That is what I am running too. Any information on what this setting is or means? All I have found is that it is a fine-tuning setting and bigger isn't always better.
Thanks a bunch.
Jump to: