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Is there such thing as a power supply wattage monitor?

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May 12, 2013 9:59:10 PM

Sorry if this has been asked, I can't find anything.

I recently just put a PSU and GPU in a desktop. I'm curious to know how much wattage it's using. Mostly just to make sure it's supplying my GPU with enough power, but also I'm curious how much power I'm using.

Is there anything to monitor that?


My desktop:
i3 2130 3.4 GHz Dual Core
6 gb DDR3 RAM
XFX Core 7850 ZNL4 1gb DDR5 860MHz Core Clock 1200 MHz Memory Clock
Enermax 450W ENP450AST


Part of the reason I want to know is XFX recommends 500W PSU minimum for this GPU, and it kind of seems like I'm not getting as much performance as I should be. Maybe not, but for example, I can run Black Ops 2 multiplayer at rock solid 60 FPS (Vsync on), Crysis 3 on high, BF3 campaign on ultra, etc. But I've had some performance issues on BF3 multiplayer, Bioshock Infinite, and Crysis 1. All run at 1080p, typically ultra texture quality, 16x texture filtering, minimal or no AA, etc. Although this is a bad reference because few people probably know this game, but I can run iracing at ultra, 120 FPS or above without Vsync

Also, most games if I don't run Vsync I get hella screen tearing. that can't be right. It's still good how it is but I feel like it could be better without overclocking.
a b ) Power supply
a b C Monitor
May 12, 2013 10:21:39 PM

1. Screen tearing happens when the GPU renders more frames in then the monitor can display. Typically most monitors run at 60 hz so that's 60fps. In short what the GPU is doing is combing multiple frames for the monitor to display. Vsync forces the GPU to wait for the monitor to refresh before sending frame data. This is why your fps is usually locked at 60 with vsync enabled. So in way screen tearing is a good thing it means your GPU is overpowered for your games.

2. If your not getting random crashes or visual artifacts then chances are your PSU is providing you GPU with enough power. PSU recommendations are usually way higher then they need to be. IMO to compensate for crappy PSU's and systems with lots of HDD's.
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May 13, 2013 11:32:16 PM

PsyKhiqZero said:
1. Screen tearing happens when the GPU renders more frames in then the monitor can display. Typically most monitors run at 60 hz so that's 60fps. In short what the GPU is doing is combing multiple frames for the monitor to display. Vsync forces the GPU to wait for the monitor to refresh before sending frame data. This is why your fps is usually locked at 60 with vsync enabled. So in way screen tearing is a good thing it means your GPU is overpowered for your games.

2. If your not getting random crashes or visual artifacts then chances are your PSU is providing you GPU with enough power. PSU recommendations are usually way higher then they need to be. IMO to compensate for crappy PSU's and systems with lots of HDD's.


Strangely if my FPS is at above 60 FPS (my monitor is 60 Hz) I actually get less tearing. I'd like to not use vsync but it makes everything look smoother, especially when I'm dropping to 30 FPS I notice tearing.
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