Which PSU should I buy?

Thanks!
So, how'd you land on that 500W figure? How did you actually figure that out?

bluejackal21 said:Alright, thanks
But how did you actually land on that 500w figure? How did you know that, specifically?

I mean, isn't Google basically your best friend at this point? 🙂
Look, there are tons of different sites out there that list exactly how much power various CPUs and GPUs pull—you can just compare them yourself. I’m running a Corsair unit, 500w, and my GPU pulls about 200w while my CPU is maybe around 70-80w, so I still have plenty of headroom... And if you decide to go with some of the newer NVIDIA or AMD models, they actually draw up to 70w less, so you really don't need to worry. Some people don't even run SLI or Crossfire, yet they still drop money on a $333 power supply and essentially throw cash out the window... So, like I said, if you do a little digging online—and assuming you aren't planning on running dual GPUs via SLI or Crossfire—those two power supplies I mentioned should work perfectly fine, and you'll still have some breathing room. Here’s a site where you can check the wattage for different cards: 🙂 http://www.hwcompare.com/

bluejackal21 said:Alright, thanks.
But seriously—how'd you land on 500W? Like, how did you actually figure out that number?

Just tell me which GPU you're rocking right now—or even just the one you're eyeing—and I can give you a solid recommendation.

Those XFX 450W and 550W units cover most high-end builds, which is why I gave you that ballpark estimate.

Honestly, those online PSU calculators always overestimate what you'll actually pull from the wall, so don't take them too seriously.

A solid 550W unit is plenty of headroom for even the most power-hungry CPU paired with a high-end single GPU, plus a few case fans and some drives, no sweat.

stormywolf39 said:A decent 550W unit can actually handle just about anything—even a high-end CPU paired with a power-hungry single GPU, plus some case fans and a few hard drives—without breaking a sweat.

That's exactly right. 🙂

I have a quick question regarding power supplies. I constantly hear people talking about high-quality brands and what they call "real" 400W or 500W units. What exactly is the deal with those cheaper power supplies? Is it true they don't actually deliver the wattage listed on the label?

To give you some context, I'm currently running an old LC- b400ATX Max 400w for my entire setup.

Also, if a power supply is low-quality or underpowered, what's the actual fallout? Does it just burn itself out, or does it take the CPU, GPU, and other components down with it?

Timothy Kim60 said:I have a question regarding power supplies. I know people constantly bring up high-quality brands and "actual 400W or 500W" ratings. So, what exactly is the deal with those cheaper units—do they just lack the wattage they claim to have on the box?

To be specific, I’m running an old LC- b400 ATX Max 400w for my total system load

And if a power supply is subpar—what actually happens? Does it kill the processor, the GPU, and everything else, or does it just die by itself?

Well, let's put it this way... using a low-quality power supply means there is a higher probability that when it eventually fails, it takes something else inside the PC down with it. Most decent power supplies include protection circuits—which, granted, aren't 100% foolproof—but they are significantly safer than the budget options. Quality components aren't cheap, and those parts are what ensure the unit lasts longer, which in turn protects your computer. They also handle heavy loads much better. For instance, a Corsair VX450w could likely pull up to 600w if pushed, whereas those cheap units might struggle to even reach the 400w they claim on the label, let alone actually deliver it...

Thomas Martin4 said:Look, here’s the thing... using a low-quality power supply means you're basically gambling that when it fails, it won't take the rest of your components down with it. High-end units come with protection circuits that aren't perfect, sure, but they're leagues safer than those budget models. Quality parts cost money, and those parts are what ensure the unit stays reliable and protects your rig over the long haul. They also handle heavy loads much better. For example, a Corsair VX450W could often pull up to 600W if needed, whereas cheap knock-offs might claim 400W on the box but can never actually deliver that much...

So what am I looking at with my ATX unit—is it really that bad? This PC was a significant investment back in the day.
If the label says 400W (and we have to factor in its age), what is the actual real-world capacity? Could it realistically provide 330W? Or maybe even 300W?

My power supply just kicked the bucket, so I’m back on the hunt for a replacement.... I'm trying to figure out if an > can actually handle my current setup, which consists of an > 965 3.40GHz, >, and an > 1GB DDR5 256-bit... Or should I be looking for something with more headroom? If so, any immediate recommendations for a beefier unit 🙂 ???

Yeah, probably, it should run without any issues.

Timothy Kim60 said:So what does that make my ATX unit—is it really from a bad company? This computer was pretty expensive when I bought it back in the day.
If it says 400w (and we have to consider how old it is), what can it actually handle? Could it do 330? Maybe even 300?

ATX isn't a company, it's just a standard. LC is likely the actual brand.

Even in higher-end builds at big-box retailers, they often throw in cheap power supplies.

I guess it might handle about 350. Maybe less. I'm not entirely sure how much power supplies degrade over the years.

Hardware Secrets has plenty of solid power supply reviews. They test everything at 40+ degrees Celsius. That's really the only way to tell which units are legit and which ones are junk. You'll see once those 400W rated pieces of trash start failing at 300W under 40+ degree heat. 😬

Like I said, high-quality power supplies usually deliver more than their "rated" wattage. Cheap ones often deliver less, but even if they don't, they tend to drift outside the acceptable voltage limits, produce too much noise, or have issues with ripple.

Timothy Kim60 said:So what am I even looking at here with this ATX unit? Is this really such a bottom-tier brand? This PC wasn't exactly cheap when I bought it back in the day.
If it claims 400W—and let's be real, it's an old unit—what can it actually handle? Can it pull 330W? Maybe 300?

We're talking about LC (manufactured by Deer)... basically, by today's standards, you couldn't find anything more subpar or low-quality than this.

Sure, the total wattage might technically hover above 300W, but the voltage stability at that level? It's criminal. As for safety protections in the event of a hardware failure? Nonexistent.

To put it bluntly, they sold you the absolute lowest quality component available while building your rig. Before you even think about upgrading any other parts, swap that power supply out immediately. Even their competitor, LC Power, sits a tier above this junk.

And I thought
Basically—when it dies—it takes the whole system down with it.

Since we're talking power supplies, can someone please explain why these two Chieftec units are ranked 4th and 9th on the list (the 450W- $100 and the 500W- $105)? Why are they significantly cheaper than everything else on this list? http://www.newegg.com/?s=chieftec

I'm not buying anything right now; I'm just asking because I've started scouting out parts for my future build.

It's probably just because it's part of that Unknown low-end series, plus they only give you a 12-month warranty.

Anyone here actually used this power supply before?

COOLER MASTER GX LITE 500W ATX PSU.

It claims to put out about 430W and comes with a 3-year warranty.🤷

Everyone seems obsessed with XFX and Seasonic, but when you look at the price difference, these are barely more expensive. It’s not even a big jump since this one is only $143.
Specs say it delivers 36A on the +12V rail and 20A on the +5V.

How long should I expect a Corsair CX 430 to last?

amberangler99 said:COOLER MASTER GX LITE 500W ATX PSU

Cooler Master power supplies don't exactly have a reputation for being top-tier, and when you see "Lite" slapped on the name, it’s a massive red flag... 😁 just like Diet Coke...

Knowing the rated wattage, what it actually delivers, or the warranty length is only half the battle. That unit might run perfectly forever in some basic office rig with integrated graphics or even a low-end discrete card, but you shouldn't push it hard for long periods. It's going to overheat because they used cheap, low-quality components, and heat is the absolute killer of electronics and the number one reason parts fail.

Paul Clark80 said:how long should a Corsair CX 430 last

Like I said before, it could run indefinitely on an office PC for a few hours a day... but if you load it up with demanding components? Who knows.

By the way, if you think you've stumbled upon some legendary PSU that's amazing but dirt cheap—and somehow everyone else missed it—😬 go look for a review on a hardware site that actually uses professional testing equipment. If you can't find a single review, it means the power supply was so worthless that nobody even bothered to test it... 😬

darkowl72 said:Cooler Master power supplies aren't exactly known for high quality, and when you see "Lite" in the name, just pray... 😁 it's like Diet Coke...

Rating wattage, actual current delivery, or warranty length is only half the story. This thing will run fine forever in some basic office rig with integrated graphics or maybe a cheap discrete card. But don't push it hard for long periods. It'll overheat because they used cheap, low-grade parts, and heat is what kills electronics. That's how most of these things fail.

Lucky I bought this before asking around here.🤣

It'll probably be fine for me. Even if I upgrade my CPU, it'll likely just be an i3, and the same goes for the motherboard—nothing extreme. I'm sticking with my old 512MB graphics card anyway.
So I think I'll be okay.
Right now I'm running a dual-core at 2.4 GHz.
Which means my setup is basically an office PC, just like you said.😁
I don't do any Cloaking either. So this should handle my load.
Besides, this is way better than my last unit. That one was only 180W and it lasted, so hopefully this one holds up since I already spent the money.😁

Also, it wasn't exactly a steal. Looking at the AMD site, the CFX Core Edition 450W is only $150, yet I paid 430 for this.
I didn't get such a bargain after all.
And obviously, they won't put a decent PSU in a review. Imagine the hit those top-tier manufacturers would take
if people found out that Cooler Master Lite(Cola) units were actually good. All those big companies would go bankrupt.
That's why they keep it quiet. You didn't even think of that!🤣

You really should've shelled out a few more $6.75 to grab an XFX 450W instead... you would've had actual peace of mind 😁
Now? Who even knows how long that thing is actually going to last you. darkowl72 already gave you the heads-up on that 😬