Radeon RX 7800 XT vs Radeon RX 7900 XT
The Radeon RX 7900 XT is a big jump in performance — leading the Radeon RX 7800 XT by roughly 35% in our performance index.
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Radeon RX 7900 XT vs Radeon RX 7800 XT: In-Depth Breakdown
Performance: Radeon RX 7900 XT vs Radeon RX 7800 XT
The Radeon RX 7900 XT is significantly faster, around 35% ahead of the Radeon RX 7800 XT. That gap is enough to move it up a tier: the Radeon RX 7900 XT is comfortable at 4K with upscaling and native 1440p, while the Radeon RX 7800 XT is better matched to 1440p. The Radeon RX 7900 XT packs 5,376 stream processors versus 3,840 on the Radeon RX 7800 XT. The Radeon RX 7900 XT also has more RT cores (84 vs 60) and more AI cores (168 vs 120), strengthening its ray-tracing and AI-upscaling performance.
Power & Efficiency
The Radeon RX 7800 XT pulls less power (263W vs 315W), so it's the easier card to cool and the lighter load on your PSU. The faster Radeon RX 7900 XT draws more overall but extracts more performance from each watt — plan for a sturdier power supply if you pick it.
VRAM & Future-Proofing
With 20GB against 16GB, the Radeon RX 7900 XT has more headroom for 4K textures and memory-hungry creative/AI tasks where the Radeon RX 7800 XT's 16GB can fall short. The Radeon RX 7900 XT's memory is also faster — 800 GB/s versus 624 GB/s (320-bit vs 256-bit bus) — which helps feed the GPU at 4K and with heavy textures.
Which should you buy: Radeon RX 7800 XT or Radeon RX 7900 XT?
The Radeon RX 7900 XT is the faster card by about 35%. With live pricing limited for this pair, base your decision on the spec differences above — particularly VRAM and power draw — and check current stock before buying.
Frequently Asked Questions
Is the Radeon RX 7900 XT better than the Radeon RX 7800 XT?
Which is better for 4K gaming, the Radeon RX 7800 XT or the Radeon RX 7900 XT?
Does the Radeon RX 7900 XT have enough VRAM advantage to matter?
Which is better for ray tracing, the Radeon RX 7900 XT or the Radeon RX 7800 XT?
Which should you buy: Radeon RX 7800 XT or Radeon RX 7900 XT?
Technical Specifications Comparison
Architecture & Cores
| Specification | Radeon RX 7800 XT | Radeon RX 7900 XT |
|---|---|---|
| Architecture | RDNA 3 | RDNA 3 |
| Process Node | TSMC N5 | TSMC N5 |
| CUDA Cores (Stream Processors / Stream Processors) | 3,840 | 5,376✓ |
| Ray Tracing Cores | 60 | 84✓ |
| Tensor / AI Cores | 120 | 168✓ |
Clock Speeds
| Specification | Radeon RX 7800 XT | Radeon RX 7900 XT |
|---|---|---|
| Base Clock | 1,800 MHz✓ | 1,500 MHz |
| Boost Clock | 2,430 MHz✓ | 2,400 MHz |
Memory
| Specification | Radeon RX 7800 XT | Radeon RX 7900 XT |
|---|---|---|
| VRAM Capacity | 16 GB | 20 GB✓ |
| Memory Type | GDDR6 | GDDR6 |
| Memory Bus | 256-bit | 320-bit✓ |
| Memory Speed | 19.5 Gbps | 20 Gbps✓ |
| Bandwidth | 624 GB/s | 800 GB/s✓ |
Connectivity & Power
| Specification | Radeon RX 7800 XT | Radeon RX 7900 XT |
|---|---|---|
| Interface | PCIe 4.0 x16 | PCIe 4.0 x16 |
| TDP | 263 W✓ | 315 W |
| Power Connectors | 2x 8-pin | 2x 8-pin |
| Released | Aug 2023 | Nov 2022 |
Related Reading
RX 7900 XT in 2026: What 20GB Actually Buys You Now That FSR 4 Has Passed It By
The RX 7900 XT has more VRAM than almost anything near its price and is locked out of AMD's current upscaler. That single tension decides whether it is a bargain or a trap — here's how to tell which one it is for you.
GDDR5 vs GDDR6 vs GDDR6X vs GDDR7: Which VRAM Generation Actually Matters for Your GPU?
Not all VRAM is created equal. GDDR5, GDDR6, GDDR6X, GDDR7 — we break down what each generation actually delivers in bandwidth, power, and real-world impact so you can stop guessing and start buying smarter.