The Geforce RTX 4070 is currently the 4th fastest GPU in the ADA family and replaces the 3070 from the Ampere series. So, theoretically, you would assume that it is powerful enough to game at 1440p resolution and therefore, would consume a lot of power.
But to our surprise, the RTX 4070 is one of the most power-efficient GPUs and while it competes with the RTX 3080, it consumes 150W less.
Nvidia’s RTX 4070 even though is an overpriced GPU at $599, the card doesn’t fall behind in power efficiency delivering good performance without overheating.
In this post, we will take a look at what power requirements your rig will have if you are using a 4070 followed by our recommended power supply units.
|EVGA 550 BP, 80+ Bronze 550W, 3 Year Warranty,...
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|Thermaltake Toughpower GX2 80+ Gold 600W...
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|MSI MPG A650GF Gaming Power Supply - Full Modular...
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|Corsair RMX Series (2021), RM750x, 750 Watt, Gold,...
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|EVGA SuperNOVA 750 GT, 80 Plus Gold 750W, Fully...
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Geforce RTX 4070 Overview
The RTX 4070 is based on the ADA Lovelace architecture and features 5888 Cuda Cores. It is based on TSMC’s 5nm process node which helps it to be more power efficient than its predecessors.
Rated at 200W of TGP, the card is pretty competitive to some mid-range GPUs in power consumption while delivering the performance of previous-gen high-end cards.
This helps it remain more compact than the higher-end 40 GPUs and doesn’t have problems fitting in normal-sized ATX cases.
As for its VRAM, It is equipped with 12GB of GDDR6X memory on a 192-bit bus delivering a total of 504.2GB/s of memory bandwidth.
Figuring Out Your PC Power Requirements
Even though the RTX 4070 requires just 200W to operate, it doesn’t mean that you can put a 350W PSU inside your computer because we have to calculate the total power consumption of all the components inside your chassis.
This includes your CPU(mostly), storage drives, chassis fans, coolers, etc. Except for the CPU, other hardware doesn’t have a lot of power requirements. So, it’s better to assume their total power consumption of around 50-100W considering you have a mid-range to high-end build.
As for the CPU, currently, most CPUs operate at 100+ watts. Unless you are using something like a Ryzen 7900, you should add up at least 150W of power consumption for the CPU alone and more if you plan to use an i9 13900K.
In total, the power consumption of all the components should be somewhere between 400-550 watts.
So, to be on the safe side, we are going with 550W and above power supply units that will allow further upgrades whether you will change your GPU in the future or put some more storage drives.
Best Power Supplies for RTX 4070
EVGA 550 BP 550 Watts
- 80 PLUS Bronze certified, with 85% efficiency or...
- Single 12V. Rail with DC-DC Converter to improve...
- Active Power Factor Correction (PFC)
- Heavy-duty protections, including OVP (Over...
To start the list, we have the EVGA 550 BP which is one of the ideal choices for any budget or mid-range gaming build. With 550 Watts you will be able to power your system and do some smaller upgrades in the future.
The 550 BP comes with an 80+ Bronze rating that easily provides up to 85% power efficiency at typical loads and comes with various heavy-duty protective features to protect your hardware from faulty currents and voltages.
It is non-modular and comes with all the cables pre-attached that would be sufficient to power the 4070 and many storage drives and accessories. The only CON I see here is the 3 years warranty because for little more money you can have more wattage PSUs with at least 5 years warranty.
Thermaltake Toughpower GX2 600 Watts
- CERTIFIED GOLD - Supporting 80 Plus Gold...
- NON MODULAR CONNECTORS – Main Power (24 pin) x...
- ULTRA QUIET 120MM FAN – Dynamic Bearing fan s...
- HIGH QUALITY CAPACITORS - High quality capacitors...
Thermaltake has many options to choose from and the best part is that they are reliable and cheap at the same time which is hard to find from other brands.
Here we have the ToughPower GX2 with 600 Watts of capacity and provides 80 Plus Gold power efficiency for a cheap price of around $70. It can provide up to 90% of power efficiency which is really ahead of its competitors at this price. The unit comes in a non-modular design with all the cables pre-attached and this is the only thing some may dislike.
Other than that you will find no complaints about its performance whether it is the voltage regulation, ripple noise, or the protective features. The company is providing a 5 years warranty on this unit and it will likely work for a longer term easily.
MSI MPG A650GF 650 Watts
- COMPACT SIZING - The MPG gaming power supply’s...
- 80 PLUS GOLD CERTIFIED - The 80 PLUS Gold...
- FULL MODULAR DESIGN - A fully modular design means...
- FLAT BLACK CABLES - All of the MPG gaming power...
If you want a top-notch quality PS unit that performs above average, then look no further than the MPG A650GF. This has enough wattage to power your rig and will allow further upgrades.
It is certainly not cheap and the reason is its build quality and features. It uses 100% Japanese Capacitors rated at 105°C and is also 80 Plus Gold certified. It is fully modular and comes with plenty of cables to attach which is one of the most handy features you can get on a PSU.
As far as its performance goes, it is very tight on voltage regulation and generally stays within 1% on all the rails as tested by Tomshardware. Power efficiency also stays around 90% as advertised by the company and is pretty good on almost all loads.
I find no reason to keep away from this unit as it is perfect for all types of builds and comes with 10 years warranty.
Corsair RM750X 750 Watts
- Fully modular, so you only connect the cables that...
- A 135mm ML fan utilizes a magnetic levitation...
- EPS12V connector for compatibility with modern...
- 100% Industrial-grade, 105°C rated Japanese...
For those who need more wattage, then the RM750X model 2021 from Corsair is another fantastic unit that has been recommended by most reviewers. At this point in time, it is not even a debate whether the RMX series is one of the best in the industry because it never fails to exceed customers’ expectations.
The unit is fully modular and boasts an 80 Plus Gold rating. Except in some minor areas, the unit is pretty excellent in the majority of areas whether you consider its operational noise, efficiency, ripple noise, and voltage regulation.
One of the greatest feats of this unit is its hold-up time which exceeds 26ms which is way above average and is one of the best features for users who have constantly fluctuating voltages.
The unit comes with a good 10-year warranty and is worth every cent you invest in it.
EVGA SuperNOVA 750 GT 750 Watts
- 80 PLUS Gold certified, with 90% (115VAC) / 92%...
- Fully Modular to reduce clutter and improve...
- 100% Japanese Capacitors plus OVP, UVP, OCP, OPP,...
- Fluid Dynamic Bearing Fan and EVGA Auto ECO Mode...
EVGA has so many options in its Gold-Rated PSU catalog and even though it can be quite confusing to choose between them, they are pretty close to each other in operation.
One of them is the SuperNova 750 GT boasting an 80 Plus Gold rating that and a fully modular design. Except for some minor cons like less efficiency on low loads and loose load regulation on minor rails, the unit is pretty solid in everything.
One of the best things about it is its compact size despite being a 750W PSU and can fit in many ITX form factor cases. It comes with a 7-year warranty and would be perfect for compact builds.
Whatever PSU you go with, make sure you have enough headroom for smaller upgrades so that you don’t regret your purchase. Good quality PSU is a no-compromise and it’s better to invest more than to regret later.