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Seasonic Vertex ATX 3.0 80 Plus Gold 850W Power Supply
Seasonic Vertex ATX 3.0 80 Plus Gold 850W Power Supply
Seasonic Vertex ATX 3.0 80 Plus Gold 850W Power Supply
Seasonic Vertex ATX 3.0 80 Plus Gold 850W Power Supply
Seasonic Vertex ATX 3.0 80 Plus Gold 850W Power Supply
Seasonic Vertex ATX 3.0 80 Plus Gold 850W Power Supply
Seasonic Vertex ATX 3.0 80 Plus Gold 850W Power Supply

Seasonic Vertex ATX 3.0 80 Plus Gold 850W Power Supply

$285.00

(55 reviews)

Upgrade your PC's power with the Seasonic VERTEX GX-850 Fully Modular PSU. This 80 Plus Gold-certified unit supports PCIe 5.0 and ATX 3.0 standards, ensuring reliable performance for high-demand systems. With its fully modular design, it's a top choice for seamless installations in high-performance PC builds. Seasonic VERTEX GX-850 Fully Modular 80 Plus Gold PCIe 5.0 / Default Category/Computer Components/Power Supplies/Seasonic PSU,Default Category/Latest Products,Default Category/Brands/AMD,Default Category/Deals Adult.

Upgrade your PC's power with the Seasonic VERTEX GX-850 Fully Modular PSU. This 80 Plus Gold-certified unit supports PCIe 5.0 and ATX 3.0 standards, ensuring reliable performance for high-demand systems. With its fully modular design, it's a top choice for seamless installations in high-performance PC builds. Seasonic VERTEX GX-850 Fully Modular 80 Plus Gold PCIe 5.0 / Default Category/Computer Components/Power Supplies/Seasonic PSU,Default Category/Latest Products,Default Category/Brands/AMD,Default Category/Deals Adult.

Seasonic Vertex ATX 3.0 80 Plus Gold 850W Power Supply

(55 reviews)

Upgrade your PC's power with the Seasonic VERTEX GX-850 Fully Modular PSU. This 80 Plus Gold-certified unit supports PCIe 5.0 and ATX 3.0 standards, ensuring reliable performance for high-demand systems. With its fully modular design, it's a top choice for seamless installations in high-performance PC builds. Seasonic VERTEX GX-850 Fully Modular 80 Plus Gold PCIe 5.0 / Default Category/Computer Components/Power Supplies/Seasonic PSU,Default Category/Latest Products,Default Category/Brands/AMD,Default Category/Deals Adult.

Upgrade your PC's power with the Seasonic VERTEX GX-850 Fully Modular PSU. This 80 Plus Gold-certified unit supports PCIe 5.0 and ATX 3.0 standards, ensuring reliable performance for high-demand systems. With its fully modular design, it's a top choice for seamless installations in high-performance PC builds. Seasonic VERTEX GX-850 Fully Modular 80 Plus Gold PCIe 5.0 / Default Category/Computer Components/Power Supplies/Seasonic PSU,Default Category/Latest Products,Default Category/Brands/AMD,Default Category/Deals Adult.

$285.00 - $485.78

in 23 offers

The lowest price for Seasonic Vertex ATX 3.0 80 Plus Gold 850W Power Supply right now is $285.00 at www.i-tech.com.au, compared across 17 retailers.

The all-time low was $249.00 on 29 Sept 2026 — today's price is 14% above the lowest ever. That's a little above the best price we've seen.

Prices last updated 2 Nov 2026.

Price comparison

Price data powered by pricesAPI.io

Last updated at 02/11/2026 23:09:06

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
https://www.google.com/s2/favicons?domain=i-tech.com.au&sz=64www.i-tech.com.au

$285.00

PSUSEAVERTEX850GX Seasonic Vertex 850W (Gx-850) 80 Plus Gold Modular Psu Atx 3.0

Delivery between 6–10 Nov $19

https://www.google.com/s2/favicons?domain=zylax.com.au&sz=64Zylax Computers

$300.30

Seasonic VERTEX 850W (GX-850) 80 PLUS Gold Modular PSU Vertex GX-850

https://www.google.com/s2/favicons?domain=scorptec.com.au&sz=64Scorptec

$319.00

Seasonic VERTEX GX 850W Power Supply

30-day returns

https://www.google.com/s2/favicons?domain=mwave.com.au&sz=64Mwave Australia

$319.00

Seasonic Vertex GX-850 850W 80 Plus Gold Fully Modular ATX3 Power Supply Black

Free delivery between 5–12 Nov

https://www.google.com/s2/favicons?domain=tristaronline.com.au&sz=64Tristar Online

$337.00

Seasonic VERTEX 850W (GX-850) 80 PLUS Gold Modular PSU

Free delivery between 9–17 Nov

https://www.google.com/s2/favicons?domain=bigw.com.au&sz=64BIG W

$349.95

Seasonic VERTEX 850W (GX-850) 80 PLUS Gold Modular PSU ATX 3.0

Free delivery between Wed – Thu

https://www.google.com/s2/favicons?domain=ebay.com.au&sz=64eBay.com.au

$349.95

Seasonic Vertex 850w (gx-850) 80 Plus Gold Modular Psu Atx 3.0

Free delivery

Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!

https://www.google.com/s2/favicons?domain=woolworths.com.au&sz=64Woolworths

$349.95

Seasonic VERTEX 850W (GX-850) 80 PLUS Gold Modular PSU ATX 3.0

Delivery between 5–13 Nov $10

https://www.google.com/s2/favicons?domain=kogan.com&sz=64Kogan.com

$349.95

Seasonic VERTEX 850W (GX-850) 80 PLUS Gold Modular PSU ATX 3.0

Free delivery

https://www.google.com/s2/favicons?domain=dicksmith.com.au&sz=64Dick Smith AU

$349.95

Seasonic VERTEX 850W (GX-850) 80 PLUS Gold Modular PSU ATX 3.0

Free delivery

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

31 January 2022Adrien

originally posted on rueducommerce.fr

Top

Coil Whine
3 May 2023Kokolol

originally posted on scan.co.uk

The coil whine from this was very loud, unacceptable for the price, but after I returned it I was told there were no issues and it was "within tolerance".I still got a refund and went for the Vertex Prime instead. Runs completely silent. I highly recommend the Prime for no surprises.

Seasonic
2 June 2023

originally posted on computeruniverse.net

Seasonic does it again! Extremely well-performing power supply, with a quality that is felt as soon as you take it out of the package. Feels very well built. It's expensive yes, but you get what you pay for. Seasonic is in a class by itself.The only thing I think is a bit like "that" are actually the cables. Good lengths and such, but everyone thinks they are a little too stiff. It can be a bit of a pain to get it looking good. But otherwise, I only have good experiences with this grudge (and Seasonic in general)

Specification

80 PLUS RatingGold
Certifications80 PLUS Gold Certified
Protection FeaturesSCP, OCP, OPP, OTP, OVP
Connectors12VHPWR cable
ModularYes

Price comparison

Updated 4 days ago
Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
https://www.google.com/s2/favicons?domain=i-tech.com.au&sz=64
www.i-tech.com.au

$285.00

PSUSEAVERTEX850GX Seasonic Vertex 850W (Gx-850) 80 Plus Gold Modular Psu Atx 3.0

Delivery between 6–10 Nov $19

https://www.google.com/s2/favicons?domain=zylax.com.au&sz=64
Zylax Computers

$300.30

Seasonic VERTEX 850W (GX-850) 80 PLUS Gold Modular PSU Vertex GX-850

https://www.google.com/s2/favicons?domain=scorptec.com.au&sz=64
Scorptec

$319.00

Out of stock

Seasonic VERTEX GX 850W Power Supply

30-day returns

https://www.google.com/s2/favicons?domain=mwave.com.au&sz=64
Mwave Australia

$319.00

Seasonic Vertex GX-850 850W 80 Plus Gold Fully Modular ATX3 Power Supply Black

Free delivery between 5–12 Nov

https://www.google.com/s2/favicons?domain=tristaronline.com.au&sz=64
Tristar Online

$337.00

Seasonic VERTEX 850W (GX-850) 80 PLUS Gold Modular PSU

Free delivery between 9–17 Nov

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

31 January 2022

Top

Adrien originally posted on rueducommerce.fr
Coil Whine
3 May 2023

The coil whine from this was very loud, unacceptable for the price, but after I returned it I was told there were no issues and it was "within tolerance".I still got a refund and went for the Vertex Prime instead. Runs completely silent. I highly recommend the Prime for no surprises.

Kokolol originally posted on scan.co.uk
Seasonic
2 June 2023

Seasonic does it again! Extremely well-performing power supply, with a quality that is felt as soon as you take it out of the package. Feels very well built. It's expensive yes, but you get what you pay for. Seasonic is in a class by itself.The only thing I think is a bit like "that" are actually the cables. Good lengths and such, but everyone thinks they are a little too stiff. It can be a bit of a pain to get it looking good. But otherwise, I only have good experiences with this grudge (and Seasonic in general)

originally posted on computeruniverse.net

Specification

80 PLUS RatingGold
Certifications80 PLUS Gold Certified
Protection FeaturesSCP, OCP, OPP, OTP, OVP
Connectors12VHPWR cable
ModularYes

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