I just ordered a desktop with this configuration, and then I realize that it only has a max of 500w power. Is that enough? I used a calculator saying it needs at least 550w?
What should I do now? Is this available to upgrade power by myself afterwards?
Processor 10th Gen Intel Core i7-10700K processor(8-Core, 16M Cache, 3.8GHz to 5.1GHz)
Video Card NVIDIA GeForce RTX 3060 Ti 8GB GDDR6
Memory 32GB, 2x16GB, DDR4, 2933Mhz
Hard Drive 512GB M.2 PCIe NVMe Solid State Drive + 2TB 7200RPM Hard Drive Chassis Options
500W Mineral White Bezel Chassis including optical drive
Wireless Killer Wi-Fi 6 AX1650i (2x2) 802.11ax Wireless and Bluetooth 5.1
@futandrew you don't say which model you're buying, but I'm assuming it's the XPS 8940 with the spec you've given. I have an XPS 8940, albeit with a lower spec.
My thoughts are:
1) Dell wouldn't sell a computer with a power supply incapable of supplying enough power (would they?), 2) Not all parts of the computer will be running flat out at the same time, 3) Potential to upgrade in the future may be limited.
With regards to the potential to upgrade the power supply, Dell supply four different power supplies with the XPS 8940 computer range, these are:
The specifications of the three 500W power supplies all appear to be identical. Also, the latest Dell desktop power supplies are of a bespoke size and also at least one of the power connectors to the motherboard is non-standard. Therefore, 500W is as big as they go from Dell and putting a non-Dell power supply into the case is not going to be straight forward, if at all possible.
Dell 500w meets minimum psu requirement for system stability.
video rendering may benefit from a lot of ram memory and more cpu core than more beefy psu. In this sense, i9-10900k is better than i7-10700k, 10 core 20 thread vs 8 core 16 thread. 128 GB better than 64 GB and 64 better than 32, although how much ram you need depends on your application. Your pc has room to grow if needed.
If you push hard for enthusiastic gaming benchmark by OC cpu and gpu, you may need more psu power. Think of fast and furious 12. If you enjoy racing to beat the next guy in fps and don’t care too much about heating your rig to red iron, then some nitro boost will help.
To give you some real-life examples: I removed all turbo boost limits on my i9 10900, so it can go up to a constant 200-210W use under full-core load in Blender or Cinebench. I've also maxed out the power limit on my 3070 GPU and it can go up to 220-225W in games.
On paper that would be more than my 500W PSU can handle, but in real life, the PSU was never maxed out because none of these programs use both CPU and GPU at max at the same time. Rendering maxes out the CPU, but keeps the GPU pretty low. Gaming maxes out the GPU, but only uses 2-3 CPU cores, so the CPU total power stays well under 100W.
The answer really depends on whether you plan to overclock your 10700k and what you plan to run on the PC.
I have a 10900F + RTX3070 with the 500W PSU and never ran into a situation where I maxed out the PSU. The GPU takes up to 220W in games, but the CPU stays under 100W even under sustained max turbo boost, because games only use 2-3 cores. In rendering software (e.g. Blender) the CPU goes up to about 200W, but the GPU is barely used. So the two balance each other out and don't overstress the PSU.
I never tried mining. That one might want to run the CPU and GPU at max power at the same time, which could add up to more than the 500PSU can give.
GeForce RTX 3060 Ti would be equipped with a GA104-200 GPU, with 4864 CUDA cores (exactly 1024 cores less than the RTX 3070). Like the RTX 3070, it would be equipped with 8GB of non-X GDDR6 memory, clocked at 14.0 Gbps. The board’s TDP could be 300W which means that a single 8pin power connector could be enough to power it.
@speedstep , did you mean 200W TDP? I've never seen 300 TDP mentioned anywhere for a 3060Ti. Even miners with overclocked cards report 190-205W under max load. My 3070 is overclocked and the most I have ever seen was 223W for a second or so (official TDP for 3070 is 220W).
@futandrew one praise I have to give to Dell is that these PSUs are very efficient. So you should be totally fine under normal usage. If you end up overclocking your 10700K (and thus increasing voltage) and/or use the PC for activities that will tax the CPU and GPU at the same time, then yeah, you might hit the limit. I recommend installing an app like MSI Afterburner or HWinfo to monitor the temps and power usage and decide.
The PCI SIG specified 225W for 6 pin and 300W for 8 pin.aka 2 x 4
I say what I mean and I mean what I say. 225W as in 150W + 75W slot. 375W max based on 2 x 6 pin and 75W slot.
Safe conversions are dual 6 pin to 8 pin. This is based on the amperage of the 6 pin connectors. Cards with 225w TDP can spike to 375w which is why there is an 8 pin connector. aka 300W for the 8 pin and 75w for the slot max. Nobody designs to run at 100 percent absolute max current. This would not pass UL 94v fire safety.
Jon-62
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Posted March 20th, 2021 04:00
@futandrew you don't say which model you're buying, but I'm assuming it's the XPS 8940 with the spec you've given. I have an XPS 8940, albeit with a lower spec.
My thoughts are:
1) Dell wouldn't sell a computer with a power supply incapable of supplying enough power (would they?),
2) Not all parts of the computer will be running flat out at the same time,
3) Potential to upgrade in the future may be limited.
With regards to the potential to upgrade the power supply, Dell supply four different power supplies with the XPS 8940 computer range, these are:
360W Liteon (2VD0G)
500W Delta (5K7J8)
500W Liteon (99TPH)
500W Chicony (Y7R0X)
The specifications of the three 500W power supplies all appear to be identical. Also, the latest Dell desktop power supplies are of a bespoke size and also at least one of the power connectors to the motherboard is non-standard. Therefore, 500W is as big as they go from Dell and putting a non-Dell power supply into the case is not going to be straight forward, if at all possible.