Is the Corsair RM750x worth it?

Greetings, I find myself with a few lingering questions regarding the cabling of this particular power supply unit. I would truly appreciate hearing some perspectives before I commit to pulling the trigger on this purchase:

1) Regarding the CPU cable, it appears to be a hybrid ATX/EPS 4+4 pin configuration, whereas my B350M Pro4 motherboard utilizes an 8-pin ATX socket. Does this imply that the cable isn't truly an 8-pin connector, but rather that only four ATX pins will engage while the remaining four EPS pins stay disconnected due to incompatibility with the motherboard's socket? I have heard whispers that 4 pins might suffice for a Ryzen 5 1600 running at stock settings, but I wonder if that is actually accurate. Furthermore, should I decide to pursue overclocking down the road, would I need to acquire a dedicated 8-pin ATX 12V cable separately?

2) On the end of the PCIe cable that plugs directly into the power supply, there are eight pin slots, yet one of them is merely an empty hole lacking the gold-plated metal contact. The other seven pins on that side are fully equipped with metal. I happened to see someone else posing this exact same question on an international forum, where they were told that this is perfectly normal and not a defect or a malfunction. Despite that reassurance, I still find it somewhat peculiar; what are your thoughts on this matter?

1, some motherboards come with a 4-pin CPU connector while others use an 8-pin setup—it really varies. Since power supplies usually have separate connectors for this, it’s honestly best to just go with the 8-pin option to ensure everything stays stable. Looking at your PSU, I see it has those available, so just plug the 8-pin connector into the motherboard and you should be all set.

2. I totally get where you're coming from, and honestly, it makes sense—I actually dealt with the exact same thing with my old Corsair unit. You aren't going to break anything or cause a disaster by plugging the wrong thing in; worst-case scenario, the computer just won't boot up. Just make sure you aren't forcing anything—you really want to feel that "click" to know it's seated properly.

Since I am dedicating a significant amount of my time to this project, I truly want to execute it properly, ensuring everything is both tidy and electrically stable. I genuinely appreciate your guidance; it is quite reassuring to see that everything falls under category 2) without issue.

Regarding the CPU power cable, I am fully aware of the point you are making, but my design choice was primarily driven by a desire for broad compatibility across various motherboards. The dilemma I currently face is that I haven't actually begun the assembly process yet, as I am still waiting on the arrival of my motherboard. Consequently, I am somewhat uncertain whether I will be able to successfully seat that hybrid cable (ATX/EPS) into a standard 8-pin socket. It appears to me that the connector might only utilize 4 pins, as it seems unlikely that all 8 would connect given that the pin configurations should technically differ (4ATX, 4EPS). Regardless, I will simply deal with the situation as it arises; if I eventually decide to attempt an overclock, I will simply purchase a dedicated 8-pin cable if it becomes necessary.

To be honest, I've actually never heard of a power supply having a hybrid cable—could you grab a quick photo? Maybe just upload it here to the forum so I can get a look at it...

To ensure there is absolutely no confusion on this matter, http://support.antec.com/support/sol...connector-for-

4. A sequence of cables

I have included our definitive explanation regarding this specific cable at the bottom of the text under section 4+4. It notes that while the pin configuration might appear somewhat unconventional at first glance, this is actually a common occurrence and remains perfectly compatible with an 8-pin socket. To be precise, rather than the standard 4+4 layout, this cable features two square pins and six rounded pins—essentially a 2+6 arrangement. http://www.playtool.com/pages/psucon...onnectors.html I shall need to verify if my own unit follows this 2+6 configuration, though I suspect it does.

From what I can gather, the rounded pins are designed to interface with the square sockets on the motherboard, whereas the square pins cannot be inserted into rounded ones. Since the cable provides six rounded pins, and assuming the motherboard requires four of each type, the math works out such that all eight pins can be successfully connected.

Yeah, you nailed it—basically every newer or higher-wattage power supply comes equipped with that 4+4 pin CPU connector. It’s pretty much the same deal as the 24-pin motherboard connector; since most modern boards use the 24-pin standard, but some older ones still rely on just 20 pins, you can actually just detach those extra 4 pins from the PSU to get a 20-pin setup for the motherboard. It works just like what you see here in this photo...

You're overthinking this...

An EPS connector is an EPS connector. There's no such thing as a hybrid ATX/EPS plug, regardless of what that random site claims.

That plug is just there to power your CPU. Most modern power supplies use a 4+4 setup. They split it up because some budget motherboards only need a single 4-pin connection. Since yours uses an 8-pin, it means it can handle a beefier processor (more wires equals more juice for the components).

The PCIe connector (for your graphics card) is a 6+2 design. It's the same logic—some GPUs only need 6 pins, while others need 8.

Specifically, with your Corsair RM750x, you'll get one 4+4 EPS connector and four PCIe connectors:

http://www.antec.com/connectors.php?ProdID=23883

Your job is pretty simple: plug the wide 24-pin connector into the main motherboard slot, then take the 8-pin EPS connector and plug it into the top left corner near the USB ports (it should be labeled ATX12V1):
https://www.asrock.com/mb/photo/AB350M%20Pro4(L2).png

Everything else goes to your hard drives, SSDs, or GPU.

I guess if you aren't running a multi-GPU rig, you probably don't even need a power supply this heavy-duty.

Now, please believe me when I say I am certainly not uneducated on this subject. Everything you have mentioned is well within my knowledge, and I assure you that connecting and routing these components poses no difficulty for me whatsoever. My hesitation was directed exclusively toward that specific CPU cable; contrary to what you suggested, its design differs from a standard cable of the same purpose—hence why it is labeled as "hybrid"—and my query stemmed solely from noticing that distinct difference in the pin layout.

A conventional 8-pin cable typically features four square pins and four D-shaped pins, whereas these so-called hybrid versions utilize two square pins and six D-shaped ones. However, through my research, I discovered that the D-shaped pins are compatible with the square ones, though the reverse is not true. In this particular instance, it isn't an issue because the cable only possesses two square pins. Had there been six square pins and only two rounded ones, we would certainly be facing a real complication. To put it more simply, the distinction between this "hybrid" version and a standard CPU cable is merely cosmetic; in practical application, they function identically because those D-shaped pins can accommodate the square ones, ensuring all 8 pins for the processor are successfully engaged. I must admit, I find the very existence of such hybrid cables somewhat baffling; it remains a mystery to me why they are manufactured this way instead of adhering to the standard configuration of four square and four rounded pins.

It was quite an undertaking to dig up this technical data, particularly for an amateur like myself. At first glance, one might assume the pin configuration implies incompatibility, perhaps suggesting that only 4 pins could be connected to the motherboard rather than the full 8, but in reality, it is all functionally the same. These details are quite specific, and one can only truly grasp and understand them by searching extensively and reading through various sources. That is all from me, best regards.

Aha, my bad, I get it now. I honestly thought you’d completely tangled your cables, especially once you started bringing up the 6+2 stuff and all that...

I’ve never once seen a power supply unit that uses an 8-pin CPU cable that isn't split into a 4+4 configuration.

I cannot say for certain, though I am inclined to believe that a 4+4 configuration would undoubtedly be the more prudent course of action.