GPU Comparison
Select up to 2 GPUs to analyze their pricing, performance, and specifications side-by-side.
On raw speed the GeForce RTX 3090 comes out dramatically faster — about 290% ahead of the GeForce GTX 1660. But the GeForce GTX 1660 is the better value, undercutting it by $1,222 GBP for the performance you get.
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GeForce RTX 3090 vs GeForce GTX 1660: In-Depth Breakdown
Performance: GeForce RTX 3090 vs GeForce GTX 1660
The GeForce RTX 3090 is dramatically faster, around 290% ahead of the GeForce GTX 1660. That gap is enough to move it up a tier: the GeForce RTX 3090 is comfortable at 1440p, while the GeForce GTX 1660 is better matched to entry-level 1080p. The GeForce RTX 3090 packs 10,496 CUDA cores versus 1,408 on the GeForce GTX 1660.
Price & Value
The GeForce GTX 1660 currently lists from $60 GBP, $1,222 GBP less than the GeForce RTX 3090 at $1,282 GBP. Despite being slower, the GeForce GTX 1660 offers the better performance-per-dollar (~449% better value), so budget-focused buyers should weigh it carefully. The GeForce GTX 1660 is trading below its $219 GBP MSRP — a genuine deal. The GeForce RTX 3090 is trading below its $1,499 GBP MSRP — a genuine deal.
Power & Efficiency
On power, the GeForce GTX 1660 is the gentler choice at 120W versus 350W. The GeForce RTX 3090 is more efficient per watt because it's faster, but its higher 350W draw means more heat and a bigger PSU. Its more modern Ampere architecture on a Samsung 8nm process is part of why it does more with each watt.
VRAM & Future-Proofing
The GeForce RTX 3090 carries 24GB versus 6GB on the GeForce GTX 1660. The extra 18GB helps at 4K, with high-resolution texture packs, and for content-creation or local-AI workloads that exhaust smaller buffers. The GeForce RTX 3090's memory is also faster — 936 GB/s versus 192 GB/s (384-bit vs 192-bit bus) — which helps feed the GPU at 4K and with heavy textures.
Which should you buy: GeForce GTX 1660 or GeForce RTX 3090?
Choose the GeForce RTX 3090 if you want the most performance and can absorb the higher price. If you're optimizing for value, the GeForce GTX 1660 stretches your money further for only slightly lower performance.