Gigabyte 450W GP-P450B
The current Gigabyte 450W GP-P450B price from retailers, its key specifications, and how it performs for each job.
Gigabyte · PSU · ATX 2.x
Historical observation — not today's price
Check a price you found Plan an upgrade
- Rated output
- 450 W
- 80 PLUS rating
- 80 PLUS Bronze
- Size
- ATX
- ATX standard
- ATX 2.31
What it is good for
| Scenario | this productCapability grade |
|---|---|
| Gaming PCScenario capability | GradeD |
| High-end GPUScenario capability | GradeF |
| Small form factorScenario capability | GradeF |
| Workstation & 24/7Scenario capability | GradeC |
A grade answers “how well does this handle that job?” — price is never part of it. We are not tracking a verified offer right now, so there is no Relative Value to show against it.
Compare these grades with the full tier list
Performance and where it ranks
Two different questions, side by side. Performance compares what the hardware can do; Value compares what that capability costs at today’s price. A product can rank high on one and low on the other — that gap is the point.
Performance Balanced
How much it can do. Price plays no part in this ranking.
#107 of 107 graded Power supplies
- #101 be quiet!be quiet! Pure Power 12 650W 33
- #102 ThermaltakeThermaltake Smart 600W 30
- #103 ThermaltakeThermaltake Toughpower GX2 600W 30
- #104 MontechMONTECH BETA 2 550W 28
- #105 MSIMSI MAG A550BN 28
- #106 ThermaltakeThermaltake Smart 500W 25
- #107 GigabyteGigabyte 450W GP-P450B 23
Performance Gaming PC
How much it can do. Price plays no part in this ranking.
#107 of 107 graded Power supplies
- #101 be quiet!be quiet! Pure Power 12 650W 33
- #102 ThermaltakeThermaltake Smart 600W 30
- #103 ThermaltakeThermaltake Toughpower GX2 600W 30
- #104 MontechMONTECH BETA 2 550W 28
- #105 MSIMSI MAG A550BN 28
- #106 ThermaltakeThermaltake Smart 500W 25
- #107 GigabyteGigabyte 450W GP-P450B 23
Performance High-end GPU
How much it can do. Price plays no part in this ranking.
#107 of 107 graded Power supplies
- #101 be quiet!be quiet! Pure Power 12 650W 33
- #102 ThermaltakeThermaltake Smart 600W 30
- #103 ThermaltakeThermaltake Toughpower GX2 600W 30
- #104 MontechMONTECH BETA 2 550W 28
- #105 MSIMSI MAG A550BN 28
- #106 ThermaltakeThermaltake Smart 500W 25
- #107 GigabyteGigabyte 450W GP-P450B 23
Performance Small form factor
How much it can do. Price plays no part in this ranking.
#100 of 100 graded Power supplies
- #94 be quiet!be quiet! Pure Power 12 650W 33
- #95 ThermaltakeThermaltake Smart 600W 30
- #96 ThermaltakeThermaltake Toughpower GX2 600W 30
- #97 MontechMONTECH BETA 2 550W 28
- #98 MSIMSI MAG A550BN 28
- #99 ThermaltakeThermaltake Smart 500W 25
- #100 GigabyteGigabyte 450W GP-P450B 23
Performance Workstation
How much it can do. Price plays no part in this ranking.
#97 of 100 graded Power supplies
- #94 MSIMSI MAG A650BN PCIE5 III 33
- #95 MontechMONTECH BETA 2 550W 33
- #96 MSIMSI MAG A550BN 33
- #97 GigabyteGigabyte 450W GP-P450B 33
- #98 ThermaltakeThermaltake Smart 700W 17
- #99 ThermaltakeThermaltake Smart 600W 17
- #100 ThermaltakeThermaltake Smart 500W 17
These ladders follow the preset scenario shown above. Your own weights re-score this product, not the whole field.
Gigabyte 450W GP-P450B in today's market
We are not tracking a current offer for Gigabyte 450W GP-P450B in Canada right now. The last offers we observed are listed below as history; capability, ranks and specifications do not depend on them.
Last observed offers
| Retailer | Condition | Price then | Observed |
|---|---|---|---|
| Newegg | New | CAD 91 | last observed 2026-11-08 |
These are historical snapshots from tracked retailers. They are not presented as currently available, and they never count toward Value, rankings or our offer data.
Someone is offering you a Gigabyte 450W GP-P450B? Check that price
Enter the asking price: it is scored against today's market under your priorities. Capability is the same at any price; only Value changes. Nothing is saved unless you save it as your deal.
Upgrade planner
Judge the change in the active scenario, then make the cash gap explicit.
Using page scenarioCapability differences are expressed as tiers and index points, not as benchmark percentages we did not measure.
What replaces the Gigabyte 450W GP-P450B today
Chosen for Balanced
Chosen for Gaming PC
Chosen for High-end GPU
Chosen for Small form factor
Chosen for Workstation
Chosen by capability in the same scenario against today's market: the closest current product that is not a downgrade, the cheapest current product within 10% of its capability, and the best Value among products at least 30% more capable.
More head-to-head comparisons in this category
Specifications and compatibility
What this product is, and what to check before it goes into your build.
Power / Interface
- Rated output
- 450 W
- 80 PLUS rating
- 80 PLUS Bronze
- ATX standard
- ATX 2.31
Show all specifications
Warranty
- Manufacturer part number
- GP-P450B
Hover any value to see where it came from: a manufacturer specification, or a figure The Comparator calculated.
Sources: Comparator offer frame 2026-11-08–2026-11-09
What to check in your build
A case that takes ATX power supplies
The size is set by the case: ATX cases take ATX units, small cases take SFX (some also SFX-L).
140 mm of power-supply bay, plus room for the cables
Case makers list the longest power supply the bay takes; modular cables need extra space behind the unit.
Found an error? Report this specification Email the field, corrected value and an optional source.
Compatibility guidance is practical help, not a score. Missing data is shown as unknown, never invented.
Compare Gigabyte 450W GP-P450B with current hardware
- Gigabyte 450W GP-P450B vs MSI MAG A550BN · Closest current replacement
- Gigabyte 450W GP-P450B vs ASRock PRO-650G · Meaningful upgrade
- Gigabyte 450W GP-P450B vs ASRock PRO-650B · Lower-cost current alternative
Choose another product to compare →
Still looking for this exact model?
- See refurbished and used listings we track
- Check current availability on Amazon · a search, not a tracked price
- Found a listing elsewhere? Score its price above
FAQ
Why is there no current price for the Gigabyte 450W GP-P450B?
None of the retailers we track lists a new Gigabyte 450W GP-P450B today. We keep the last offers we observed as dated history, but we do not present them as today's price and they never enter Value or rankings. Capability grades and specifications do not depend on an offer and stay current.
What is a fair used price for the Gigabyte 450W GP-P450B?
It depends on what today's market offers for the same money, not on a percentage of an old price. Enter the asking price in the price check on this page: it scores the Gigabyte 450W GP-P450B at that price against current products under your priorities and shows the prices at which its Value would be strong.
What should I upgrade to from the Gigabyte 450W GP-P450B?
For the same capability today, the closest current product is MSI MAG A550BN; for a meaningful step up, ASRock PRO-650G is the best Value among products at least 30% more capable. The upgrade planner on this page ranks options by what they add for the money you actually spend after selling your Gigabyte 450W GP-P450B.
Useful links & sources
offer frame 2026-11-08–2026-11-09 · formula psu-value-v6.1 · facts facts-2026-11-09 · Relative Value is an estimate from our current dataset, the selected weights and dated market prices — not an official product rating and not a price forecast. Target prices are calculation thresholds, not predictions. Methodology We are not a shop. Affiliate links may earn us a commission; they never change the calculations or the ranking.