WEBVTT 00:00:00.480 --> 00:00:08.559 Power consumption is always a big one. So, you can see my system with the 00:00:04.240 --> 00:00:10.320 Radeon 6870 pulls about 300 W from the 00:00:08.559 --> 00:00:15.920 wall when I've got it under a full firm arc load. Now, what we might want to do 00:00:13.280 --> 00:00:20.400 just for comparison's sake is fire up Prime 95. Give that CPU a little bit of 00:00:18.640 --> 00:00:24.560 stress. So, this should represent about what kind of a power supply you should 00:00:22.480 --> 00:00:28.640 be looking at for remember this is quite a basic system and this is an 80 plus 00:00:26.480 --> 00:00:32.800 silver power supply. So, that's a best case scenario, but you should be using 00:00:30.480 --> 00:00:38.079 for an SSD, a couple uh four gigs of RAM, uh quad core, this is an 875K 00:00:35.840 --> 00:00:42.559 processor overclocked, and then a stock speed 6870. You're looking at about 400 00:00:41.200 --> 00:00:47.520 watts from the wall. So, you want to buffer that. Make sure you got at least 00:00:44.320 --> 00:00:49.840 kind of a 500 to 600 watt power supply, 00:00:47.520 --> 00:00:53.360 and then scale from there accordingly to whatever else you want to add to it. So, 00:00:51.520 --> 00:00:58.079 I'll give you some comparison numbers against the 5870 as well as the GTX 480 00:00:56.320 --> 00:01:01.760 just so you have some context for that because remember every system is going 00:00:59.600 --> 00:01:05.439 to be a little bit different, but uh Okay, so hold on. Let me do some quick 00:01:03.120 --> 00:01:09.439 math here. So, and about 90%. So, we're probably pulling about 360 W from the 00:01:07.439 --> 00:01:13.119 power supply right now. Okay, as soon as you start adding more drives and stuff, 00:01:10.960 --> 00:01:19.439 you might see that jump up to about 400 watts. So, uh giving the power supply 00:01:16.320 --> 00:01:20.880 some time to degrade, etc., etc. A 500 00:01:19.439 --> 00:01:26.159 watt power supply is probably about what I'd recommend for this. 00:01:23.680 --> 00:01:33.759 Power consumption for the 5870, as you can see, is quite a bit higher than the 00:01:29.600 --> 00:01:36.479 6870. Now, it is a faster card, but I 00:01:33.759 --> 00:01:41.680 don't think it's well, I guess it's pretty proportional. Remember, the 5870 00:01:38.799 --> 00:01:46.159 and the 6870 are built using the same manufacturing process. So that means 00:01:43.600 --> 00:01:51.119 that unlike some generational leaps, you can't just, you know, stuff twice as 00:01:48.479 --> 00:01:54.159 many transistors into the same die size and then just call it, okay, now it's 00:01:52.720 --> 00:01:57.600 twice as powerful. So it's not really that simple. This is more of an 00:01:55.759 --> 00:02:00.719 evolutionary step rather than a revolutionary step. So I just wanted to 00:01:59.200 --> 00:02:05.840 show you those power consumption numbers really quick. This is Firmark with Prime 00:02:03.360 --> 00:02:10.160 95 running. So, with for this card, yeah, you'd need another 50 to 75 watts 00:02:08.239 --> 00:02:14.879 of available power on your power supply, remembering that if you're me, you're 00:02:12.640 --> 00:02:19.760 usually over buying on the power supply so that it'll run nice and quiet because 00:02:16.879 --> 00:02:25.280 most power supplies will ramp up the fan much more aggressively past about 50 to 00:02:21.920 --> 00:02:27.040 60% load. With Prime 95 and Firmark 00:02:25.280 --> 00:02:32.239 running at the same time with the GTX 480, we're looking at about 550 watts 00:02:30.000 --> 00:02:36.720 from the wall, which means that that power supply is providing about 500 W. 00:02:34.720 --> 00:02:43.040 So, if you had a 500 W power supply with a GTX 480, a 3.8 GHz overclocked quad, 00:02:40.239 --> 00:02:47.440 an SSD, blah blah blah, etc. about this build, then you'd be stressing it to the 00:02:45.360 --> 00:02:51.280 max. When you're under extreme load, that fan's going to ramp right up. 00:02:49.200 --> 00:02:56.000 really for a system like this, something like what I'm using in here, which is an 00:02:52.959 --> 00:02:58.239 80 plus silver cougar 850 watt power 00:02:56.000 --> 00:03:02.319 supply is a very good choice. Uh because it'll also give you the the headroom to 00:03:00.239 --> 00:03:06.159 add another GTX 480 later on if you wanted. Although at that point, you'd 00:03:04.239 --> 00:03:10.959 probably be pulling about 600 or so watts from the wall. And uh 00:03:09.599 --> 00:03:14.239 yeah, even that's I guess that's fine for an 850 watt 80 plus silver power 00:03:12.800 --> 00:03:18.879 supply. It should be all right. But ideally, as I said before, you want your 00:03:16.080 --> 00:03:23.280 power supply doing about 50 60% duty, maybe 75% under an I, you know, an 00:03:21.440 --> 00:03:27.840 extreme load scenario like a Firmark Plus Prime 95. I mean, how often are 00:03:25.120 --> 00:03:32.560 you, you know, rendering video with four cores while you game, you know? So, um, 00:03:30.640 --> 00:03:36.560 so 75% load is probably what I would target to ensure it doesn't get too 00:03:34.000 --> 00:03:43.599 loud. Thanks for checking out my video on the heat and temperature or rather on 00:03:40.319 --> 00:03:47.360 the power consumption of the GTX 480, 00:03:43.599 --> 00:03:50.319 Radeon 5870 and the brand new Radeon 00:03:47.360 --> 00:03:50.319 6870.