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PSU: 650W Modular or 700W non-modular?

Hi, I want to build a new PC and now it's time to choose for the right PSU. I have two options:
- a semi-modular Thermaltake Smart SE 630W
- a non-modular Thermaltake TR2 700W

Both are 80+ Bronze and I've made sure they really work great (not like some 800W for 40€ power supplies I've found). Both PSU are more or less same price here in Spain.
The thing is I'm going to use the Thermaltake View 27 as my case, and the space where the cables go isn't huge, so I'm not sure if I should rather go with a semi-modular or a non-modular.
What do you guys think?


EDIT: I chose the answer to my question, and after that we kept talking about efficiency of Crossfiring, other possible PSUs and more. We got to the conclusion that Crossfiring is only useful when you buy both at the same time, otherwise it's better to just update the graphics card after a while and not buy over-priced mobos and psus. I recommend you to read that part as well.
14 answers Last reply Best Answer
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  1. Before we can answer which is the "right" PSU, may we know what are your PC specs (especially CPU and GPU), for you to need 630W/700W of power?

    Also, do you have a link to the store where you will purchase the PSUs from, so we can offer alternatives?
  2. To my knowledge the SE 630W PSU isn't a good one. I'm pretty sure if you look at actual reviews it will be a fail unit. The TR2 700W isn't horrible, but isn't great either. I agree with Raison, odds are good you don't need a PSU that large. Nearly all rigs can be powered by a 450-550W unit. So unless you are running a CF/SLI setup or have some odd 200W+ CPU (and if you do, drop that idea now please...) you are better off getting a smaller and higher quality unit.
  3. 4745454b said:
    To my knowledge the SE 630W PSU isn't a good one. I'm pretty sure if you look at actual reviews it will be a fail unit. The TR2 700W isn't horrible, but isn't great either. I agree with Raison, odds are good you don't need a PSU that large. Nearly all rigs can be powered by a 450-550W unit. So unless you are running a CF/SLI setup or have some odd 200W+ CPU (and if you do, drop that idea now please...) you are better off getting a smaller and higher quality unit.


    Let me write the specs in more detail:
    - Graphics Card: 2 Sapphire Radeon RX 480 4GB Nitro+ (probably will overclock it)
    - Mobo: Gigabyte Z170X Gaming 3
    - CPU: i5 6600k (probably overclocking to 4.2GHz)
    - RAM: 16GB DDR4 2666Mhz Ballistix Elite
    - Liquid Cooler: Arctic Liquid Freezer 120
    - Case: Thermaltake View 27
    Other parts of the PC are irrelevant

    I'll probably buy most of that from amazon.es since I'm from spain and there aren't many component websites. Also, since everything is imported, I'll pay much more than I would :pfff::/ Both the 700W and the 630W are at around 65-70€

    About the graphics card: My main idea is to buy just one RX 480 now, and buy a second one in a few months when I have enough money again. I still don't know if I want them crossfired or each one working indepently
  4. I looked up the 630. Better than I thought it was, but only has two PCIe plugs. Meaning you won't have enough plugs to run two GPUs. So even if you OC one GPU and your CPU you are looking at ~350W max. A high quality 500-550 will do that just fine. I saw that because if you don't want to cross 80% load on your PSU which is the top end of the "sweet spot" for efficiency. then you need something that has 437.5W as output on the 12V rail. (36.5A) Most 500-550W PSUs will do this.
  5. 4745454b said:
    I looked up the 630. Better than I thought it was, but only has two PCIe plugs. Meaning you won't have enough plugs to run two GPUs. So even if you OC one GPU and your CPU you are looking at ~350W max. A high quality 500-550 will do that just fine. I saw that because if you don't want to cross 80% load on your PSU which is the top end of the "sweet spot" for efficiency. then you need something that has 437.5W as output on the 12V rail. (36.5A) Most 500-550W PSUs will do this.


    What about the 700W then? It supports 4 PCIe ports, my main concern is how I will have the cables managed. I really want to have 2 graphics cards, is it really that bad? Since I have a motherboard that supports both cards at x8 x8 (instead of the sh*tty x16 x4) I want to make use of it.
  6. Best answer
    I didn't look up the 700W. I suppose I should seeing as the 630 was better than I thought. The 700W might be worse.

    http://www.hardwaresecrets.com/thermaltake-tr2-700-w-power-supply-review/11/

    It seems it depends on which "TR2" you get. If you get the FSP built TR2 then you are fine. If you get the older junk TR2 you'll have problems. I wouldn't worry about cable management. If you are doing a CF/SLI setup then you'll need nearly all the cables anyways. Main 24pin ATX bundle, the 8pin EPS bundle. And all the PCIe plugs. Odds are good that you'll use a strand or two of SATA power plugs, leaving only one or two strands left over doing nothing. Seeing as you'll be using nearly everything I wouldn't worry about modular.
  7. UPDATE: Just found a good deal for a Cooler Master power supply. It's the 650W GM, and runs at 87% efficiency, for 67€ (I'm buying it used) and it's semi-modular ish. If such deal runs out, there's still a 750W version which would be around 73€. Here I leave the link to it, I've seen very good comments about it https://www.amazon.es/dp/B00FNCIGE2/ref=twister_B01MRKDGQU?_encoding=UTF8&psc=1
  8. It's ok, not that grand.

    http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story6&reid=430

    The big issue is the grab bag of caps. That could be an issue if they change the make up of the caps later on. They might drop the OKish capXon and just use the worse Elite or Jun Fu. While you finally have enough power plugs for your rig, I'm not sure you have enough power. Two 480s and you are looking at around 375W for those Sapphire Radeon RX 480 4GB Nitro+ you mentioned. You mentioned OCing the GPUs and the CPU so you are looking at a power draw of around 500W+ overall. Assuming you want to be kind to your PSU and load it to only ~80% max of it's 12V rail, that means you need something that can output ~655W, and that PSU can hit 624W.

    Because I can see deleted posts I wanted to mention that's a third TR2 model, the TR2 S. Product would be mostly similar to the CM 650GM that you are looking at, but the cap selection inside is better. I'd rather have Teapo over Jun Fu anyday. Problem of course is that it only has the two PCIe plugs, though it can output 648W on the 12V rail which is more then the 624W of the other PSU. Honestly I suspect they are very similar in performance, but also not really enough to power your planned rig.
  9. 4745454b said:
    It's ok, not that grand.

    http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story6&reid=430

    The big issue is the grab bag of caps. That could be an issue if they change the make up of the caps later on. They might drop the OKish capXon and just use the worse Elite or Jun Fu. While you finally have enough power plugs for your rig, I'm not sure you have enough power. Two 480s and you are looking at around 375W for those Sapphire Radeon RX 480 4GB Nitro+ you mentioned. You mentioned OCing the GPUs and the CPU so you are looking at a power draw of around 500W+ overall. Assuming you want to be kind to your PSU and load it to only ~80% max of it's 12V rail, that means you need something that can output ~655W, and that PSU can hit 624W.

    Because I can see deleted posts I wanted to mention that's a third TR2 model, the TR2 S. Product would be mostly similar to the CM 650GM that you are looking at, but the cap selection inside is better. I'd rather have Teapo over Jun Fu anyday. Problem of course is that it only has the two PCIe plugs, though it can output 648W on the 12V rail which is more then the 624W of the other PSU. Honestly I suspect they are very similar in performance, but also not really enough to power your planned rig.


    Late reply :p I see picking up the right power supply isn't as easy as I thought it would be, and living in Spain doesn't make it easier. I see good EVGA reviews everywhere, but they're too expensive in amazon.es, as annoying as it can be.
    In the end, I don't even know if it's that worth picking up 2 GPUs, I just feel like I might need them in the future, but then again, that means spending more money in components that I don't need right now.
    It also annoys me a bit that this Coolermaster claims to be semi-modular but actually just has removable sata cables. A PCie removable cable would have been appreciated as well since I will have to have it laying around there in the meantime.

    I wanted to ask you something now, since I've been looking at different fonts but haven't really found a definite answer: does every RX480 need 2 PCIe cables? To my knowledge, a Sapphire RX480 4GB just needs a 6+2 pin, but again I could be just dumb and forgetting something.
  10. To be honest, with prices and your budget such as they are I'm surprised you are considering a CF setup. Single card setups are cheaper and as long as the card is good enough you should be able to game just fine. Unless you are doing some odd monitor setup. I'm guessing are you using a single 1080 60Hz monitor. Why the crazy setup?

    Quote:
    does every RX480 need 2 PCIe cables?


    To my knowledge most should just need a single 8 pin. I'm sure there are models that need an 8 and a 6pin plug.
  11. Quote:
    To be honest, with prices and your budget such as they are I'm surprised you are considering a CF setup

    Well that's basically because of two things. First, I don't plan spending money on 2 graphics cards at the same time, I want to buy one first and, when I feel like I need it, buy a second one. But also, I want to try out Hackintoshing, which means that all Nvidia 1000 series are unavailable, and 900s are too expensive here in Spain (don't really know why, they should actually be at lower price but yeah :sarcastic: ).

    Quote:
    To my knowledge most should just need a single 8 pin. I'm sure there are models that need an 8 and a 6pin plug.

    Hmmm then where's the need to buy a power supply with 4 PCIe cables instead of just 2?
  12. Quote:
    First, I don't plan spending money on 2 graphics cards at the same time, I want to buy one first and, when I feel like I need it, buy a second one.


    That's the problem with CF though. By the time you are looking to buy a second card for the boost, the first card you have will be junk. And running two junk, er, low end cards together isn't a good idea. I thought I'd be running a CF setup and bought a 750W PSU. Ran it for maybe a year or so before I realized I'd never add a second card and I spent way too much on a 750W bronze PSU. Had I just accepted I wasn't doing CF from the start I would have just bought a good 450-500W gold unit for the same price. I ended up selling the 750W for ~$40. Very sad.

    Quote:
    Hmmm then where's the need to buy a power supply with 4 PCIe cables instead of just 2?


    I realized that a post or two ago. I'm not sure why I thought you needed two per card. Boo boo on my part.
  13. 4745454b said:
    Quote:
    First, I don't plan spending money on 2 graphics cards at the same time, I want to buy one first and, when I feel like I need it, buy a second one.


    That's the problem with CF though. By the time you are looking to buy a second card for the boost, the first card you have will be junk. And running two junk, er, low end cards together isn't a good idea. I thought I'd be running a CF setup and bought a 750W PSU. Ran it for maybe a year or so before I realized I'd never add a second card and I spent way too much on a 750W bronze PSU. Had I just accepted I wasn't doing CF from the start I would have just bought a good 450-500W gold unit for the same price. I ended up selling the 750W for ~$40. Very sad.

    Quote:
    Hmmm then where's the need to buy a power supply with 4 PCIe cables instead of just 2?


    I realized that a post or two ago. I'm not sure why I thought you needed two per card. Boo boo on my part.


    Oh lel, that's interesting to know, changes many perspectives. I guess I'm taking down the possibility of running crossfire then, okay. Well I'm really glad you could help me with that dilema, you really helped a lot with everything :)
    I guess I'm saving 50€ for sure now that I don't have to go that high on components.
  14. I'm still running my 7950. If I had kept my 750W PSU I could buy a used 7950 on the used market for ~$80-100 and get something that performs around what? A 470 or 480? Which costs ~$200? And uses ~175W instead of my CF setup of 400W? Unless you do it quickly it just usually makes more sense to get the CF/SLI right off the bat. Doubling your card seems like a good idea, but because hardware gets so much better so fast it's usually a better idea to just upgrade to a faster single card.
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