Buying Guide

The Fastest Gaming GPUs You Can Buy

The top chip from each recent flagship tier, ranked by where NVIDIA and AMD position them, with the power and size each one demands.

By , PC Hardware Editor

12 min read5 products evaluated

PC components laid out on a workbench ready for a build
Illustrative image

Speed rankings shift with each game, so we ordered these cards by chip tier as NVIDIA and AMD position them, not by our own frame counts. The RTX 5090 sits at the top, followed by the RTX 4090 and RTX 5080.

We compared VRAM, memory type, boost clock and recommended power from each listing; we did not benchmark these cards.

Quick Picks

Which of the 5 picks to look at first. Tap a name for the full analysis.

  1. Top Chip Available

    ASUS TUF Gaming GeForce RTX 5090

    An RTX 5090 with 32GB of GDDR7.

    Best for: The highest tier NVIDIA sells.

    Check price for ASUS TUF Gaming GeForce RTX 5090 on Amazon (opens in a new tab)
  2. Fastest Previous Flagship

    ASUS ROG Strix GeForce RTX 4090 OC Edition

    An RTX 4090 with 24GB of GDDR6X.

    Best for: Buyers who find a 4090 in stock.

    Check price for ASUS ROG Strix GeForce RTX 4090 OC Edition on Amazon (opens in a new tab)

Our Picks

Top Chip Available1 of 5

ASUS TUF Gaming GeForce RTX 5090

The ASUS TUF RTX 5090 is in a class of its own with 32GB of GDDR7 and 21,760 CUDA cores.

Best for

The highest tier NVIDIA sells.

Skip if

Price-first buyers should look at the ASRock 7900 XTX Phantom Gaming, which cost less when we checked.
ASUS TUF Gaming GeForce RTX 5090

Why we like it

At the time of writing it cost several times more than the other cards here, so it only makes sense when nothing slower will do. Nothing else here matches its 32GB video memory; the ROG Strix 4090 comes closest at 24GB. No other pick in this guide offers an RTX 5090 gpu; compare the ASUS TUF 4080 Super, which has an RTX 4080 Super gpu.

It shares GDDR7 memory with the ASUS TUF RTX 5080; the ASRock 7900 XTX Phantom Gaming goes with GDDR6 memory. You also get a 512-bit memory bus at 28Gbps and a GPU holder in the box. No dimensions are published for the ASUS TUF RTX 5090; get length and thickness from the maker's page first. It was the highest-priced of the 5 picks at the time of writing, so the case for it rests on what it adds over the ROG Strix 4090 and the rest.

Key specs

GPU
RTX 5090
VRAM
32GB
Memory
GDDR7
Outputs
3 x DisplayPort 2.1b, 2 x HDMI 2.1b

Pros

  • 32GB of VRAM, room for large local AI models as well as games
  • Faster GDDR7 memory
  • 512-bit memory bus at 28Gbps
  • 21,760 CUDA cores

Cons

  • Costs more than the ASRock 7900 XTX Phantom Gaming at the time of writing

The catch

The maker doesn't give its recommended power supply; if that figure matters, the ASRock 7900 XTX Phantom Gaming offers 800W.

Fastest Previous Flagship2 of 5

ASUS ROG Strix GeForce RTX 4090 OC Edition

ASUS's ROG Strix 4090 uses a vapor chamber with a milled heatspreader and enlarged Axial-tech fans.

Best for

Buyers who find a 4090 in stock.

Skip if

Price-first buyers should look at the ASRock 7900 XTX Phantom Gaming, which cost less when we checked.
ASUS ROG Strix GeForce RTX 4090 OC Edition

Why we like it

It is the most premium of the RTX 4090 listings here, and it was also the priciest at the time of writing. A vapor chamber with a milled heatspreader and scaled-up axial-tech fans cool the chip, which supports DLSS 3. It matches the ASRock 7900 XTX Phantom Gaming on video memory (24GB).

It is the only pick here with an RTX 4090 gpu; the ASUS TUF RTX 5090 has an RTX 5090 gpu instead. It shares GDDR6X memory with the ASUS TUF 4080 Super; the ASRock 7900 XTX Phantom Gaming goes with GDDR6 memory. No dimensions are published for the ROG Strix 4090; get length and thickness from the maker's page first.

Its power connector and recommended PSU are not published, so confirm both for the ROG Strix 4090 with the maker. Its price falls between the ASUS TUF 4080 Super and the ASUS TUF RTX 5090, based on our last check.

Key specs

GPU
RTX 4090
VRAM
24GB
Memory
GDDR6X

Pros

  • 24GB of VRAM, room for large local AI models as well as games
  • Vapor chamber with a milled heatspreader
  • Axial-tech fans scaled up for more airflow
  • RTX 4090 gpu, the only one here

Cons

  • Costs more than the ASRock 7900 XTX Phantom Gaming at the time of writing

The catch

Buyers who need a confirmed recommended power supply should compare it with the ASRock 7900 XTX Phantom Gaming, which offers 800W.

Best RTX 50803 of 5

ASUS TUF Gaming GeForce RTX 5080 16GB OC

The ASUS TUF RTX 5080 offers every figure a builder needs: 348mm long, 3.6 slots, a 16-pin 12V-2x6 plug and an 850W PSU.

Best for

Most high-end builds.

Skip if

Look at the others if this bothers you: a 348mm length needs a roomy case.
ASUS TUF Gaming GeForce RTX 5080 16GB OC

Why we like it

Its large cooler and protective PCB coating suit a long-term 4K build. On video memory it ties with the ASUS TUF 4080 Super at 16GB. An RTX 5080 gpu is unique to it among these picks, while the ROG Strix 4090 uses an RTX 4090 gpu.

Like the ASUS TUF RTX 5090, it has GDDR7 memory, while the ASRock 7900 XTX Phantom Gaming uses GDDR6 memory. No other pick in this guide offers a 2730MHz (OC mode) boost clock; compare the ASUS TUF 4080 Super, which has a 2640MHz (OC mode) boost clock. It also offers military-grade components and a phase-change GPU thermal pad. It was priced above the ASRock 7900 XTX Phantom Gaming and below the ASUS TUF 4080 Super at the time of writing.

Key specs

GPU
RTX 5080
VRAM
16GB
Memory
GDDR7
Length
348mm
Thickness
3.6-slot
Recommended PSU
850W
Power connector
16-pin 12V-2x6
Boost clock
2730MHz (OC mode)

Pros

  • 16GB of VRAM for high-resolution textures
  • Faster GDDR7 memory
  • Military-grade components
  • Protective PCB coating

Cons

  • A 348mm length needs a roomy case
  • Its 3.6-slot cooler covers the slots below
  • Calls for a 850W or larger PSU

Best RTX 4080 Super4 of 5

ASUS TUF Gaming GeForce RTX 4080 Super OC Edition

The ASUS TUF 4080 Super offers a 2640MHz boost in OC mode, the highest clock among these 4080 Super cards.

Best for

A step below the 5080.

Skip if

Skip it if video memory matters most to you; the ASUS TUF RTX 5090 offers 32GB.
ASUS TUF Gaming GeForce RTX 4080 Super OC Edition

Why we like it

Its Axial-tech fans are rated by ASUS for 23% more airflow. It supports DLSS 3 frame generation, and third-generation RT cores double ray tracing performance over the last generation. It matches the ASUS TUF RTX 5080 on video memory (16GB).

It is the only pick here with an RTX 4080 Super gpu; the ASUS TUF RTX 5090 has an RTX 5090 gpu instead. It shares GDDR6X memory with the ROG Strix 4090; the ASUS TUF RTX 5080 goes with GDDR7 memory. A 2640MHz (OC mode) boost clock is unique to it among these picks, while the ASRock 7900 XTX Phantom Gaming uses a 2615MHz boost clock.

No dimensions are published for the ASUS TUF 4080 Super; get length and thickness from the maker's page first. Its price falls between the ASUS TUF RTX 5080 and the ROG Strix 4090, based on our last check.

Key specs

GPU
RTX 4080 Super
VRAM
16GB
Memory
GDDR6X
Boost clock
2640MHz (OC mode)

Pros

  • 16GB of VRAM for high-resolution textures
  • 2640MHz boost clock in OC mode
  • Axial-tech fans that ASUS rates for 23% more airflow
  • RTX 4080 Super gpu, the only one here

Cons

  • Video memory trails the ASUS TUF RTX 5090 (32GB)
  • Costs more than the ASRock 7900 XTX Phantom Gaming at the time of writing

The catch

If video memory is your priority, the ASUS TUF RTX 5090 (32GB) is the stronger choice.

Fastest AMD Card5 of 5

ASRock Radeon RX 7900 XTX Phantom Gaming OC 24GB

ASRock's Phantom Gaming OC offers a 2615MHz boost, 96MB of Infinity Cache and 0dB silent cooling at light load.

Best for

AMD builds with an 800W supply.

Skip if

Worth skipping when calls for a 800W or larger PSU is a problem.
ASRock Radeon RX 7900 XTX Phantom Gaming OC 24GB

Why we like it

It was the least expensive 7900 XTX here at the time of writing. It boosts to 2615MHz with 24GB of GDDR6, 96 compute units and 96MB of Infinity Cache. The Phantom Gaming triple-fan cooler sits on a reinforced metal frame.

On video memory it ties with the ROG Strix 4090 at 24GB. You get an RX 7900 XTX gpu here, which sets it apart from the ASUS TUF 4080 Super and its an RTX 4080 Super gpu. No other pick in this guide offers GDDR6 memory; compare the ASUS TUF RTX 5080, which has GDDR7 memory.

It is the only pick here with a 2615MHz boost clock; the ASUS TUF RTX 5080 has a 2730MHz (OC mode) boost clock instead. No dimensions are published for the ASRock 7900 XTX Phantom Gaming; get length and thickness from the maker's page first. No other pick here cost less at our last price check, and the ASUS TUF RTX 5080 was closest.

Key specs

GPU
RX 7900 XTX
VRAM
24GB
Memory
GDDR6
Recommended PSU
800W
Boost clock
2615MHz

Pros

  • 24GB of VRAM, room for large local AI models as well as games
  • 96MB of Infinity Cache
  • 0dB silent cooling at light load
  • Lowest recommended power supply of the picks (800W)

Cons

  • Calls for a 800W or larger PSU
  • Video memory of 24GB, behind the ASUS TUF RTX 5090 (32GB)

The catch

What it gives up: video memory of 24GB, behind the ASUS TUF RTX 5090 (32GB); by contrast, the ASUS TUF RTX 5090 offers 32GB.

How We Chose

Alex Morgan compared the manufacturer specifications, connectivity, warranty terms and compatibility of every pick. Figures come from the makers unless a third-party source is named; we did not test these products ourselves.

The circuit board on the back of a graphics card
The circuit board on the back of a graphics card
What we compared
We lined up five cards on GPU, video memory, memory and recommended power supply as the makers state them. These are research figures, not bench results: 3 of 5 picks leave out recommended power supply.
What every pick has in common
All 5, from the ASUS TUF RTX 5090 to the ASRock 7900 XTX Phantom Gaming, state GPU, video memory and memory.
Where the specs have gaps
The ASUS TUF RTX 5090, the ROG Strix 4090 and the ASUS TUF 4080 Super give no recommended power supply; the ASUS TUF RTX 5090 and the ROG Strix 4090 give no boost clock.
Price range
At our last check the picks ran from the ASRock 7900 XTX Phantom Gaming ($1000 to $1500) to the ASUS TUF RTX 5090 (over $1500).

What to Look For

Key buying criteria so you get the right fit the first time.

  1. Video memory

    The ASUS TUF RTX 5090 tops video memory at 32GB and the ASUS TUF 4080 Super sits lowest at 16GB. The ROG Strix 4090 comes second at 24GB, in the same price tier as the ASUS TUF RTX 5090.

  2. Recommended power supply across these picks

    Here recommended power supply runs from 850W on the ASUS TUF RTX 5080 to 800W on the ASRock 7900 XTX Phantom Gaming, a 6% spread. Start with the ASRock 7900 XTX Phantom Gaming if recommended power supply decides it. The ASUS TUF RTX 5090, the ROG Strix 4090 and the ASUS TUF 4080 Super give no recommended power supply figure, so 2 of 5 picks are compared here.

    A graphics card's bare circuit board around the GPU die
    A graphics card's bare circuit board around the GPU die
  3. Memory

    The ASUS TUF RTX 5090 and the ASUS TUF RTX 5080 list GDDR7; the ROG Strix 4090 and the ASUS TUF 4080 Super list GDDR6X; the ASRock 7900 XTX Phantom Gaming lists GDDR6.

  4. Boost clock

    The ASUS TUF RTX 5080 lists 2730MHz (OC mode); the ASUS TUF 4080 Super lists 2640MHz (OC mode); the ASRock 7900 XTX Phantom Gaming lists 2615MHz. Settling boost clock first narrows 3 picks to 1 or 1 or 1.

  5. What to check at home

    No dimensions are published for the ASUS TUF RTX 5090; get length and thickness from the maker's page first. Measure for 348mm and 3.6 slots before ordering the ASUS TUF RTX 5080.

How to Choose

By priority

PriorityConsiderWhy
The highest tier NVIDIA sellsASUS TUF RTX 5090An RTX 5090 with 32GB of GDDR7
Buyers who find a 4090 in stockROG Strix 4090An RTX 4090 with 24GB of GDDR6X
Most high-end buildsASUS TUF RTX 5080A 2730MHz OC-mode boost on the RTX 5080
A step below the 5080ASUS TUF 4080 Super16GB of GDDR6X at a 2640MHz OC-mode boost
AMD builds with an 800W supplyASRock 7900 XTX Phantom GamingAn RX 7900 XTX with 24GB of GDDR6

Scroll sideways to see every column.

Key specs side by side

The ASUS TUF RTX 5090 leads on video memory at 32GB, ahead of the ROG Strix 4090 at 24GB. "Not listed" marks recommended power supply where the ASUS TUF RTX 5090, the ROG Strix 4090 and the ASUS TUF 4080 Super leave the figure out.

CardGPUVRAMMemoryRecommended PSU
ASUS TUF RTX 5090RTX 509032GBGDDR7Not listed
ROG Strix 4090RTX 409024GBGDDR6XNot listed
ASUS TUF RTX 5080RTX 508016GBGDDR7850W
ASUS TUF 4080 SuperRTX 4080 Super16GBGDDR6XNot listed
ASRock 7900 XTX Phantom GamingRX 7900 XTX24GBGDDR6800W

Scroll sideways to see every column.

By price at the time of writing

The ASRock 7900 XTX Phantom Gaming was the lowest-priced pick ($1000 to $1500) and the ASUS TUF RTX 5090 the highest (over $1500) when we checked; tiers move with Amazon pricing.

Price tierCards
About $1000 to $1500ASRock 7900 XTX Phantom Gaming
Over $1500ASUS TUF RTX 5080, ASUS TUF 4080 Super, ROG Strix 4090, ASUS TUF RTX 5090

Frequently Asked Questions

How does the ROG Strix 4090 compare with the ASUS TUF RTX 5090 on video memory?

Between the top two, it is 32GB on the ASUS TUF RTX 5090 against 24GB on the ROG Strix 4090, a 33% difference. The ASUS TUF 4080 Super closes the ranking at 16GB.

Which has the lowest recommended power supply: the ASRock 7900 XTX Phantom Gaming or the ASUS TUF RTX 5080?

The ASRock 7900 XTX Phantom Gaming is lowest on recommended power supply at 800W; the ASUS TUF RTX 5080 follows at 850W, 6% apart. No recommended power supply figure is published for the ASUS TUF RTX 5090, the ROG Strix 4090 and the ASUS TUF 4080 Super, which leaves 2 of 5 picks ranked here.

What does the ASUS TUF RTX 5090 add over the ASRock 7900 XTX Phantom Gaming?

On paper it adds video memory (32GB against 24GB). On our last price check the ASRock 7900 XTX Phantom Gaming was in the $1000 to $1500 tier and the ASUS TUF RTX 5090 in the over $1500 tier, with 3 other picks between them; pay the difference only if video memory decides your purchase.

Why is the ASUS TUF 4080 Super our Best RTX 4080 Super pick?

It carries the badge for 16GB of GDDR6X at a 2640MHz OC-mode boost. The price of that: the ASRock 7900 XTX Phantom Gaming, the cheapest pick, still beats it on video memory (24GB against 16GB). It suits A step below the 5080.

Do the ASUS TUF RTX 5090 and the ROG Strix 4090 differ on GPU?

The ASUS TUF RTX 5090 uses RTX 5090; the ROG Strix 4090 uses RTX 4090; the ASUS TUF RTX 5080 uses RTX 5080; the ASUS TUF 4080 Super uses RTX 4080 Super; the ASRock 7900 XTX Phantom Gaming uses RX 7900 XTX.

Will the ASRock 7900 XTX Phantom Gaming work with my setup?

No dimensions are published for the ASRock 7900 XTX Phantom Gaming; get length and thickness from the maker's page first. ASRock 7900 XTX Phantom Gaming: the maker suggests a PSU of 800W or more. In this guide it ranks fifth of 5, as our Fastest AMD Card pick, and third of 5 on video memory (24GB).

Bottom Line

The ASUS TUF RTX 5090 is the fastest chip on sale, with 32GB of VRAM. The ROG Strix RTX 4090 follows, the TUF RTX 5080 and TUF RTX 4080 Super cost less, and the ASRock RX 7900 XTX Phantom Gaming is AMD's top card.

About the author

PC Hardware Editor

Alex covers PC hardware, monitors, components, upgrades and peripherals for The PC Journal, with a focus on helping readers understand specifications, compatibility and meaningful product trade-offs.

Covers: Monitors, Graphics cards, Processors, PC components, Peripherals, Upgrades and compatibility

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