47 replies to this topic

[Flapdrol]

Goose, on 11 January 2015 - 02:30 PM, said:

No; Seriously: Drives and fans matter …

Meh, 10W per harddisk, 2W per fan. Gotta have a lot to really make them matter.

[xWiredx]

Flapdrol, on 11 January 2015 - 02:44 PM, said:

Meh, 10W per harddisk, 2W per fan. Gotta have a lot to really make them matter.

Yeah, I don't think I've seen a modern HDD (read that: SATA3 6gbps HDD) use more than 10.5W and most of them (even my 1TB Velociraptor) don't use that much except in niche situations. SSDs are 1-3W depending on the controller and NAND. So a Samsung SSD, 2TB storage HDD, and 4 case fans will still only run about 21W if all of them are going full-blast for some reason at the same time.

[Lord Letto]

Reyvolution, on 11 January 2015 - 01:05 PM, said:

I contacted the person right away... Hopefully hear back from them and they do still have it.

I'm assuming if I was able to get that card, I'd have to get a more powerful PSU? Actually for any of the cards mentioned I would most likely need a more powerful PSU except for the 750,won't I?

Derp, just looked through the thread again and noticed you were talking about the R9 280X, I thought you were talking about the MSI 770 OC. on the 280X, this here: http://www.tomshardw...equirement.html
Says recommended is a 750W, some say Quality 500W will work while others say stick to the Manufactures Recommendation of 750W, with some saying 750W for XFire while Manufacturer says 1000W for XFire? I don't know, I tried looking at AMD Page for the cards before but never noticed where it says Max TDP and Recommend Minimum PSU Wattage unlike on the Nvidia Site for their Cards. as for the 270, according to this thread: http://www.tomshardw...quirements.html 500W should be enough as long as it got at least a Maximum Combined +12V continuous current rating of 28 Amps or greater and at least 1 6 Pin PCI-E Power Connector. according to this: http://www.tomshardw...iew,3107-7.html
the 7870, R9 270 & 270X is on the same level as the GTX 660Ti & 760

[Reyvolution]

Lord Letto, on 12 January 2015 - 03:14 PM, said:

Derp, just looked through the thread again and noticed you were talking about the R9 280X, I thought you were talking about the MSI 770 OC. on the 280X, this here: http://www.tomshardw...equirement.html
Says recommended is a 750W, some say Quality 500W will work while others say stick to the Manufactures Recommendation of 750W, with some saying 750W for XFire while Manufacturer says 1000W for XFire? I don't know, I tried looking at AMD Page for the cards before but never noticed where it says Max TDP and Recommend Minimum PSU Wattage unlike on the Nvidia Site for their Cards. as for the 270, according to this thread: http://www.tomshardw...quirements.html 500W should be enough as long as it got at least a Maximum Combined +12V continuous current rating of 28 Amps or greater and at least 1 6 Pin PCI-E Power Connector. according to this: http://www.tomshardw...iew,3107-7.html
the 7870, R9 270 & 270X is on the same level as the GTX 660Ti & 760

I have been able to find some R9 270X on kijiji for $140-160, http://www.kijiji.ca...ddr5/1024540552 and http://www.kijiji.ca...sale/1042499462

But I feel like I should just wait for the 960 to release though, see what the price points are and how they perform. Unless the R9 270X's are highly recommended by everyone for someone on a budget?

[xWiredx]

Some leaked info from the GTX 960 has popped up from people under NDA - looks to be almost exactly half the performance of the GTX 980 and the price point appears to be $199-209. Prices will vary a bit depending on manufacturer, assuming they are coming out with non-reference models (beefed-up coolers, factory overclocks, the usual).

[Goose]

Not a leak; Just a workaround …

[ValkerieFire]

A 500w psu is more than enough for a 280x. I ran a 7970 (same as 280x) folding rig at 100% for almost a year on a 500w psu from Corsair and never had a problem. Just like the calculator shows, most people overestimate their psu needs.

This isn't to say some people don't need big PSUs. I ran SLI Gtx Titans and they tripped my seasonic 750w gold. That psu just couldn't handle the high amps that dual 250w GPUs require. I was under 750w total system demand, but the amp demand for the GPUs was too high. Once I got a 1000w psu I was good. The 970-980 are only 150-165w GPUs. The 250w versions of those GPUs are still coming and if you want SLI for those, then you need a huge psu. For regular GPUs not in sli, 500w is more than sufficent.

Edited by ValkerieFire, 13 January 2015 - 12:47 PM.

[Goose]

Here we go: http://www.guru3d.co...specs-leak.html

[Kuritaclan]

Lord Letto, on 12 January 2015 - 03:14 PM, said:

Derp, just looked through the thread again and noticed you were talking about the R9 280X, I thought you were talking about the MSI 770 OC. on the 280X, this here: http://www.tomshardw...equirement.html
Says recommended is a 750W, some say Quality 500W will work while others say stick to the Manufactures Recommendation of 750W, with some saying 750W for XFire while Manufacturer says 1000W for XFire? I don't know, I tried looking at AMD Page for the cards before but never noticed where it says Max TDP and Recommend Minimum PSU Wattage unlike on the Nvidia Site for their Cards. as for the 270, according to this thread: http://www.tomshardw...quirements.html 500W should be enough as long as it got at least a Maximum Combined +12V continuous current rating of 28 Amps or greater and at least 1 6 Pin PCI-E Power Connector. according to this: http://www.tomshardw...iew,3107-7.html
the 7870, R9 270 & 270X is on the same level as the GTX 660Ti & 760

http://www.tomshardw...0x,3635-18.html
This is the card only
If you add in the Mainboard/CPU its a question what you get amd or intel
If you add now peripherie like Fans, HDD, SSD, Mouse, Keyboard, USB Stick etc.
You have somewhat a power consumption over the fump.
Also you should notice that any oc could add up some watts too.



now you can determinate your base system + oc of a i7k (it is still base system only cpu, ram, fan, ssd, mouse, keyboard consume some watts)

now you add the power consumption of the gpu. For example one of the fearsome cards of the last period a oc-able msi 290x lighning with 2 8xPol and 1x6 Pin ATX power connectors.

This card consum in avg 260w but can spike to 450W if oced and under full load. So there are the problems to find the right psu. And the gaps in supposed psu wattage you showed.

I recommand you should look up the pci power connectors on the graphic card to have a knowledge what the card would likly consume. 8pol =150W 6pol=75watt and over PCIe connector you have max another 75W by atx norm (some cards like dual GPU violate the norm - your kabelsystem should be preparred or you risk burning because the cables have not enough profil). - If you graphic card has for example like the reference model of a GTX 970 2 6Pol your card could consume up to ~225W max wihtout going over the standards.

So a Rig with a GTX970 (Reference) + i7 4790k is normaly
225W (GPU best to have a detailed oc power consumtion a custom build GTX970 Gigabyte Gaming 1 with 1 8Pol+16Pol+PCie would be 300W a Zotac AMP! Extreme with 2 8Pol 375W) +
154-83+138W (CPU OC 4,7Ghz) +
10% Equipment (like fans etc.) =
225+209+43,4=477,4W

So a 500W Quality psu do well to power up the Reference card. Most will go up to a 550W/600W psu for some safty fallback. But it is in not necessary, since you don't slay your pc with benchmark for cpu and gpu stresstesting and have max power consumption. Normal gaming is far less to this top cunsum case. A normal Rig nowaday consume most time aroudn 300W while gaming. I saw Rig with 970+Xeon and good 400W quality psu what did well and don't shut down. I would think it is a bit strange but ok it did well.

The OP with its
i5 3550 - would be somewhat 150W
the 280X Refrence Karts consume 257W (if he get a 280X VaporX it might could be more)
+10% Equipment
a 450/500W quality psu should do fine.

Edited by Kuritaclan, 13 January 2015 - 11:20 PM.

[Goose]

Lord Letto, on 11 January 2015 - 12:38 PM, said:

Corsair Builder Series CX750 750 Watt 80 PLUS Bronze Certified Power Supply (CP-9020015-NA)

http://www.hardocp.c...supply_review/9

Edited by Goose, 21 January 2015 - 06:10 PM.

[Kuritaclan]

Goose, on 21 January 2015 - 06:06 PM, said:

http://www.hardocp.c...supply_review/9

Yeha, we have a winner.

[Reyvolution]

So after reading reviews and such on the GTX 960. I ended up getting a GTX 970. It came up so many times in the reviews I read, video's I watched. I figured I might as well up my budget and pick one up. So I got the Gigabyte GTX 970 G1, along with a 750w PSU.

A lot happier now with this set up!

[Kuritaclan]

Reyvolution, on 28 January 2015 - 01:13 PM, said:

So after reading reviews and such on the GTX 960. I ended up getting a GTX 970. It came up so many times in the reviews I read, video's I watched. I figured I might as well up my budget and pick one up. So I got the Gigabyte GTX 970 G1, along with a 750w PSU.

A lot happier now with this set up!

YOu just don't need a ******* 750W PSU. What the hack is wrong with you us people. The only thing a 750w psu will du you will have 5 to 10W more power consumption compared to a reasonable 550W psu for your Setup Intel i5-3550 with a now choosen 970.

[Lord Letto]

Kuritaclan, on 28 January 2015 - 02:38 PM, said:

YOu just don't need a ******* 750W PSU. What the hack is wrong with you Canadian people. The only thing a 750w psu will du you will have 5 to 10W more power consumption compared to a reasonable 550W psu for your Setup Intel i5-3550 with a now choosen 970.

Fixed, and we would rather be safe that sorry, rather have a PSU bigger than needed than get a smaller one and have a temporary spike overload it causing it to go boom! plus there's not that big of a price difference so why not, it'll only use what's needed anyway, it's not like it'll be using all 750W 24/7. plus bigger PSU=Bigger upgrade options in the future, I'm sure the Titan Z & R9 295x2 wouldn't run on a 550W while a 750W should be enough, or the 970 in SLI if he decides to get a 2nd one in a few years when games get demanding and more powerful hardware would be needed.

[Kuritaclan]

SLI/CF should be done asap. Buying a second card 2-3 years later is worthless since gc then will have nealy the same performance on a single chip. For 295X/Titan you need anyhow a certified psu. So there is no need to get a 750W psu, peside you wanna have higher wattage consume than needed caused loss in transformation.
LS

[Odins Fist]

FYI, a PSU only pulls the power you are using... but...

Whoever said a 750 watt PSU will use more power and possibly cost a lot more in energy bills versus a 550 watt PSU is smoking crack. Your PSU delivers what you use... Your looking at a 5% difference max depending on what's being powered or not, more like 2% max from what I have read.
ANY difference between the two are beyond LESS then negligible depending on efficeincy ratings and real usage.
It is said that 50% load is optimal in some situations, maybe not be as beneficial as believed, but FAR better then not having enough or being on the edge when under load.

NEVER skimp on a PSU, get a little above the rating you need for AMPs on a single rail PSU and you will be just fine.
A little extra is great... Not enough equals problems and tears.

HERE, this may help...
http://www.tomshardw...ectricity-drain


On a side note I NEVER had a brownout on a component, BUT I know someone with a H.I.S. card that did a few years ago.
"cough cough"

Really the only thing a 750 watt PSU over a 550 watt PSU will do is ENSURE that you could add MORE components to your PC, to a certain degree. RAID drives, Sound card, disco ball, water cooling pump and fans, etc etc etc...
It's not going to make his power bill go through the roof if he's not using the extra 200 watts that the PSU could draw if needed..

Edited by Odins Fist, 28 January 2015 - 05:52 PM.

[Kuritaclan]

Quote

FYI, a PSU only pulls the power you are using... but...

The psu pulls the power it needs to transform it down the voltages the componentens need. Every Transformation has loose. This is the real world.

Under normal load in games the system of the TE with the i5+GTX970 did pull 300 to 350W. There you go. If you use a 750W psu, you will likely have 40% efficency. The extra is 550W included the 550W is the 90% efficency for a 80+ gold for example. (http://www.anandtech...ew-feat-evga/15). Not to mention that a good psu is made to compensate spikes. 750W is just usless if did not go for a sli/cf on start - since as i said after some years you get a new card which has the performance of the double gc-setting.
nU

Edited by Kuritaclan, 28 January 2015 - 06:25 PM.

[Odins Fist]

The 750 Watt PSU is NOT going to jack your Power bill.

[Kuritaclan]

http://www.tomshardw...age-electricity

Don't get the effiency rattings wrongs. Thats all i have to say.

quotes that have it:

Quote

A gold rated unit is more efficient at 20% than a bronze unit at 50%, so... it really depends on the unit, not the capacity of that unit.

Quote

Looking at those charts, I'd say no more than maybe a 2% difference ( if that ) at the same 450w load

= this is the "more" wattage consumption im talking about.

Edited by Kuritaclan, 28 January 2015 - 07:22 PM.

[xWiredx]

Guys, the math with PSUs regarding basic efficiency is simple. Example:

System draw - 300W
PSU efficiency - 75%
Draw at wall - 400W

In an extreme circumstance, it would be possible to draw more power due to having a more powerful PSU with the same level of efficiency as a less powerful PSU, but we're talking quite a difference. It isn't that big normally:

A 500W PSU at 85% efficiency at 50% load ~ 288W
A 550W PSU at 85% efficiency at 45.5% load ~ 288W

Even if you assumed that the 500W PSU hit the sweet spot at 50% load and the 550W PSU suffered about a 2-3% decrease in efficiency with the slightly lower overall load (which is an actual thing that happens in testing quite often, but not at these particular numbers necessarily) it would still only be ~292-295W.

When you're talking PCs and power bills, time is another consideration. If you leave the PC on for 4 hours/day, you can look forward to paying $2-5 more per year on your electricity. Yeah, you guys are squabbling about less than $1/month. Even better? It's winter, and PCs are more efficient space heaters than most actual space heaters. That $1/month for the winter months could actually be saving you about 5 cents/month.