GeForce RTX 4070 vs Radeon RX 7900 XT
On raw speed the Radeon RX 7900 XT comes out ahead: well ahead on speed, about 35% ahead of the GeForce RTX 4070. That said, the GeForce RTX 4070 is the smarter buy on value — $289 GBP less for the performance on offer.
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Radeon RX 7900 XT vs GeForce RTX 4070: In-Depth Breakdown
Performance: Radeon RX 7900 XT vs GeForce RTX 4070
The Radeon RX 7900 XT is significantly faster, around 35% ahead of the GeForce RTX 4070. 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 GeForce RTX 4070 is better matched to 1440p.
Price & Value
The GeForce RTX 4070 currently lists from $509 GBP, $289 GBP less than the Radeon RX 7900 XT at $798 GBP. Despite being slower, the GeForce RTX 4070 offers the better performance-per-dollar (~16% better value), so budget-focused buyers should weigh it carefully. The GeForce RTX 4070 is trading below its $600 GBP MSRP — a genuine deal. The Radeon RX 7900 XT is trading below its $899 GBP MSRP — a genuine deal.
Power & Efficiency
At 200W against 315W, the GeForce RTX 4070 is both the lower-power and the more efficient card, making it the easier build to cool and power. Its more modern Ada Lovelace architecture on a TSMC N4 process is part of why it does more with each watt.
VRAM & Future-Proofing
VRAM favors the Radeon RX 7900 XT at 20GB versus 12GB on the GeForce RTX 4070 — that extra 8GB matters most at 4K, with high-res texture packs, and for content-creation/local-AI work.
Features & Ecosystem
Beyond raw numbers, the GeForce RTX 4070 brings NVIDIA DLSS upscaling/frame generation and stronger ray tracing, while the Radeon RX 7900 XT offers AMD FSR upscaling and strong rasterization value. If you lean on upscaling or ray tracing, that ecosystem difference can matter as much as the frame-rate gap.
Which should you buy: GeForce RTX 4070 or Radeon RX 7900 XT?
Choose the Radeon RX 7900 XT if you want the most performance and can absorb the higher price. If you're optimizing for value, the GeForce RTX 4070 stretches your money further for only slightly lower performance.
Frequently Asked Questions
Is the Radeon RX 7900 XT better than the GeForce RTX 4070?
Which is better for 4K gaming, the GeForce RTX 4070 or the Radeon RX 7900 XT?
Is the Radeon RX 7900 XT worth the extra $289 GBP over the GeForce RTX 4070?
Does the Radeon RX 7900 XT have enough VRAM advantage to matter?
Which should you buy: GeForce RTX 4070 or Radeon RX 7900 XT?
Technical Specifications Comparison
Architecture & Cores
| Specification | GeForce RTX 4070 | Radeon RX 7900 XT |
|---|---|---|
| Architecture | Ada Lovelace | RDNA 3 |
| Process Node | TSMC N4 | TSMC N5 |
| CUDA Cores (CUDA Cores / Stream Processors) | 5,888✓ | 5,376 |
| Ray Tracing Cores | 46 | 84✓ |
| Tensor / AI Cores | 184✓ | 168 |
Clock Speeds
| Specification | GeForce RTX 4070 | Radeon RX 7900 XT |
|---|---|---|
| Base Clock | 1,920 MHz✓ | 1,500 MHz |
| Boost Clock | 2,475 MHz✓ | 2,400 MHz |
Memory
| Specification | GeForce RTX 4070 | Radeon RX 7900 XT |
|---|---|---|
| VRAM Capacity | 12 GB | 20 GB✓ |
| Memory Type | GDDR6X | GDDR6 |
| Memory Bus | 192-bit | 320-bit✓ |
| Memory Speed | 21 Gbps✓ | 20 Gbps |
| Bandwidth | 504 GB/s | 800 GB/s✓ |
Connectivity & Power
| Specification | GeForce RTX 4070 | Radeon RX 7900 XT |
|---|---|---|
| Interface | PCIe 4.0 x16 | PCIe 4.0 x16 |
| TDP | 200 W✓ | 315 W |
| Power Connectors | 1x 16-pin | 2x 8-pin |
| Released | Apr 2023 | Nov 2022 |
Related Reading
Is a Used RTX 4070 Still Worth Buying? A Secondary-Market Guide
Two generations on, the RTX 4070 has become a used-market staple rather than a new purchase. Here's what it still does well, what 12GB costs you, and exactly what to check before buying one secondhand.
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.