The GPU Radar

AMD RX 7800 XT vs NVIDIA RTX 4090

Launch MSRPs, release cycles and deals windows as of November 9, 2026.

This is a cross-brand comparison between the AMD RX 7800 XT (RX 7000, High-end, superseded by the AMD RX 9070) and the NVIDIA RTX 4090 (RTX 4000, Enthusiast, superseded by the NVIDIA RTX 5090), released 10 months apart. Against the RTX 4090, the RX 7800 XT costs $1,100 less at launch MSRP ($499 vs $1,599, 69% cheaper), has 8 GB less VRAM (16 GB vs 24 GB) and draws 187W less at rated TDP (263W vs 450W).

Cross-brand comparison: NVIDIA offers DLSS and CUDA for AI/ML workloads. AMD offers competitive rasterization, often with more VRAM at the same price. Choose based on your ecosystem needs.
AMD RX 7800 XT
Buy/Wait:Superseded

This GPU is no longer the current generation. It has been replaced by the AMD RX 9070.

Superseded by RX 9070

Best for: 1440p gamers who can find a used unit near or below the $499 MSRP — at current above-MSRP new prices, the RX 9070 is the better buy.

Full details →
NVIDIA RTX 4090
Buy/Wait:Superseded

This GPU is no longer the current generation. It has been replaced by the NVIDIA RTX 5090.

Superseded by RTX 5090

Best for: 4K enthusiasts who can find a well-priced used RTX 4090 and don't need DLSS 4 or Blackwell's efficiency improvements.

Full details →
AMD RX 7800 XTNVIDIA RTX 4090
TierHigh-endEnthusiast
GenerationRX 7000RTX 4000
VRAM16 GB24 GB
Memory TypeGDDR6GDDR6X
TDP263W450W
UpscalingFSR3DLSS3
Ray Tracing✅✅
Launch MSRP$499$1599
Editor score8.5/109.0/10
ReleasedSep 6, 2023Oct 12, 2022
Cycle length~550 days~840 days
Cycle adviceSupersededSuperseded
Deals adviceClearanceClearance
SuccessorRX 9070RTX 5090

Why buy each?

AMD RX 7800 XT

Used market value

New prices (~$1,000) are well above MSRP due to the memory shortage — used units around $500 are the only remaining value path.

16GB GDDR6

Same VRAM as its successor — no VRAM compromise.

Mature RDNA 3 drivers

Well-optimized after 18+ months of updates.

NVIDIA RTX 4090

24GB GDDR6X — more VRAM than RTX 5080

More VRAM than the RTX 5080 (16GB), relevant for AI workloads and 4K texture packs even in the Blackwell era.

Used market only

New retail units are scarce and priced above MSRP. The used market (eBay, local classifieds) is the only viable path to value.

Mature driver ecosystem

Over 3 years of driver optimizations make this one of the most stable GPUs available.

Timing: When to Buy

Released Sep 6, 2023, the RX 7800 XT has been on the market for 3 years 2 months. It has been superseded by the AMD RX 9070, which launched Mar 6, 2025, so it's no longer a current-generation buy — new stock is clearance, and the rest of the market is second-hand.

Released Oct 12, 2022, the RTX 4090 has been on the market for 4 years. It has been superseded by the NVIDIA RTX 5090, which launched Jan 30, 2025, so it's no longer a current-generation buy — new stock is clearance, and the rest of the market is second-hand.

Both cards are superseded. If you're buying new, their replacements — the AMD RX 9070 and NVIDIA RTX 5090 — are where current pricing and timing advice apply.

Deals & Pricing

At launch MSRP the RX 7800 XT is $1,100 cheaper than the RTX 4090 ($499 vs $1,599, 69% less). Per gigabyte of VRAM that's $31.2 for the RX 7800 XT and $66.6 for the RTX 4090 — the RX 7800 XT gives more memory for the money. Launch MSRP is only a reference point for a superseded card; its real price is whatever clearance or used stock sells for today.

RX 7800 XT (deals window to Dec 5, 2026, rated Caution): Black Friday 2026 — analysts do not expect memory supply to normalise before late 2027, so real clearance pricing is unlikely. Only buy if a deal lands below the $499 MSRP.

RTX 4090 (deals window to Jun 30, 2027, rated Wait): New units are listed above $4,400 as of October 2026 and used units sell around $2,500–$3,000 — far above the $1,599 MSRP. Only consider a used unit if it comes well below current RTX 5090 street prices. Otherwise, the RTX 5090 at MSRP is better value.

Who Should Choose Each

Choose the AMD RX 7800 XT if…

  • you want lower power draw — 263W vs 450W rated TDP
  • you want the newer card — it launched 10 months later
  • you prefer AMD's FSR3 upscaling to NVIDIA's DLSS3
  • you find one on clearance or second-hand for clearly less than the RTX 4090 costs

Choose the NVIDIA RTX 4090 if…

  • you want more VRAM — 24 GB vs 16 GB
  • you want newer GDDR6X memory rather than GDDR6
  • you want our higher-rated card of the two — 9.0 vs 8.5 editor score
  • you want the higher-tier card — Enthusiast rather than High-end
  • you prefer NVIDIA's DLSS3 upscaling to AMD's FSR3
  • you find one on clearance or second-hand for clearly less than the RX 7800 XT costs

Our Take

Our pick: NVIDIA RTX 4090

Both of these cards are superseded, so if you're buying new, compare the AMD RX 9070 and NVIDIA RTX 5090 instead. The rest of this verdict applies to clearance or used units.

Our pick is the RTX 4090: it carries the higher editor score (9.0 vs 8.5), and it also has 8 GB more VRAM (24 GB vs 16 GB).

Go for the RX 7800 XT instead if you want lower power draw: 263W vs 450W rated TDP, or if you want the newer card: it launched 10 months later.

Buy/Wait and deals ratings come from release-cycle and pricing data, not benchmarks. How we rate →

Quick Winner by Buyer Type

Tight budget
AMD RX 7800 XT
$499 vs $1,599 launch MSRP
VRAM-hungry workloads
NVIDIA RTX 4090
24 GB vs 16 GB
Lower power / smaller PSU
AMD RX 7800 XT
263W vs 450W TDP
Buying right now
Tie
Both Superseded
Best overall rating
NVIDIA RTX 4090
9.0 vs 8.5 editor score
Newest hardware
AMD RX 7800 XT
Released Sep 6, 2023 vs Oct 12, 2022

The Gaps That Matter

Price
AMD RX 7800 XT
69% cheaper at launch
$499 vs $1,599 ($1,100 difference)
VRAM
NVIDIA RTX 4090
50% more memory
24 GB vs 16 GB (+8 GB)
Power draw
AMD RX 7800 XT
42% lower rated TDP
263W vs 450W (−187W)
VRAM per dollar
AMD RX 7800 XT
53% less per GB
$31.2 vs $66.6 per GB at launch MSRP
Memory type
NVIDIA RTX 4090
Newer GDDR6X
GDDR6X vs GDDR6
Editor score
NVIDIA RTX 4090
+0.5 points
9.0 vs 8.5 out of 10
Age
AMD RX 7800 XT
10 months newer
Sep 6, 2023 vs Oct 12, 2022

Where they're level: buy/wait signal (Superseded for both).