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AMD RX 6950 XT, 6750 XT & 6650 XT Review ft. Sapphire

Today sees the launch of AMD's latest GPUs – the RX 6950 XT, 6750 XT and 6650 XT. Based on the same RDNA 2 architecture and 7nm process as the rest of the RX 6000 series, this launch is best described as a mild refresh, with the core GPU make-up remaining unchanged. Instead, we are simply getting higher clock speeds and faster memory modules – so just how much more performance is on offer from these new models?

Unlike previous AMD launches, today we are not focusing on an ‘MBA' reference design. Instead, Sapphire sent us its Nitro+ design for the RX 6650 XT and 6750 XT, while we are looking at the brand-new Nitro+ Pure for the RX 6950 XT.

These are factory overclocked models, with increased power limits and dual-BIOS support, which are all features that enthusiasts will be interested in. Let's find out just how good these cards are.

RX 6950 XT  RX 6900 XT  RX 6750 XT RX 6700 XT RX 6650 XT RX 6600 XT
Architecture RDNA 2 RDNA 2 RDNA 2 RDNA 2 RDNA 2 RDNA 2
Manufacturing Process 7nm 7nm 7nm 7nm 7nm 7nm
Transistor Count 26.8 billion 26.8 billion 17.2 billion 17.2 billion 11.1 billion 11.1 billion
Die Size  519 mm² 519 mm² 336 mm² 336 mm² 237 mm² 237 mm²
Ray Accelerators 80 80 40 40 32 32
Compute Units  80 80 40 40 32 32
Stream Processors  5120 5120 2560 2560 2048 2048
Game GPU Clock Up to 2100MHz Up to 2015MHz Up to 2495MHz Up to 2424MHz Up to 2410MHz Up to 2359MHz
Boost GPU Clock Up to 2310MHz Up to 2250MHz Up to 2600MHz Up to 2581MHz Up to 2635MHz Up to 2589MHz
ROPs 128 128 64 64 64 64
AMD Infinity Cache 128MB 128MB 96MB 96MB 32MB 32MB
Memory 16GB GDDR6 18Gbps 16GB GDDR6 16Gbps 12GB GDDR6 18Gbps 12GB GDDR6 16Gbps 8GB GDDR6 17.5Gbps 8GB GDDR6 16Gbps
Memory Bandwidth 576 GB/s 512 GB/s 432 GB/s 384 GB/s 280 GB/s 256 GB/s
Memory Interface  256-bit 256-bit 192-bit 192-bit 128-bit 128-bit
Board Power  335W 300W 250W 230W 180W 160W

Before diving into the review, it's worth quickly recapping the core spec of the new cards. In essence, AMD has simply taken the existing RX 6900 XT, 6700 XT and 6600 XT, and added a factory overclock alongside faster memory modules. As you can see, the fundamental makeup of each GPU is unchanged – core count, RT cores, ROPS and Infinity Cache is all the same. It just comes down to GPU and memory frequency.

That does also necessitate an increase to power draw, with the RX 6950 XT rated at 335W, the 6750 XT at 250W and the 6650 XT at 180W. All three Sapphire cards we are looking at today have even higher power limits though, but we are on hand to utilise our best ever GPU power testing methodology in this review, so read on for our most detailed power testing yet.

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