In PowerColoration’s personal phrases, ‘Hellhound has lengthy been guarding the gaming underworld and is dedicated to ship probably the most dependable gaming expertise.’ What precisely which means is not clear, however in the present day we are going to discover out as we put the RX 7900 XTX Hellhound Spectral White by its paces. A good looking-looking card, we put it to the check and discover out if the sweetness is barely pores and skin deep.
White PC elements is an ever-growing market, one thing PowerColoration shall be trying to capitalise on with the RX 7900 XTX Hellhound Spectral White – impressively, even the PCB is white. That’s alongside staple options reminiscent of dual-BIOS, a triple-fan cooler and a manufacturing unit overclocked core, so let’s discover out precisely what the Hellhound Spectral White has to supply.
| RX 7900 XTX | RX 7900 XT | RX 6950 XT | RX 6900 XT | RX 6800 XT | RX 6800 | |
| Architecture | RDNA 3 | RDNA 3 | RDNA 2 | RDNA 2 | RDNA 2 | RDNA 2 |
| Manufacturing Process | 5nm GCD + 6nm MCD | 5nm GCD + 6nm MCD | 7nm | 7nm | 7nm | 7nm |
| Transistor Count | 57.7 billion | 57.7 billion | 26.8 billion | 26.8 billion | 26.8 billion | 26.8 billion |
| Die Size | 300 mm² GCD 220 mm² MCD | 300 mm² GCD 220 mm² MCD | 519 mm² | 519 mm² | 519 mm² | 519 mm² |
| Ray Accelerators | 96 | 84 | 80 | 80 | 72 | 60 |
| Compute Units | 96 | 84 | 80 | 80 | 72 | 60 |
| Stream Processors | 6144 | 5376 | 5120 | 5120 | 4608 | 3840 |
| Game GPU Clock | Up to 2300MHz | Up to 2000 MHz | Up to 2100MHz | Up to 2015MHz | Up to 2015MHz | Up to 1815MHz |
| Boost GPU Clock | Up to 2500 MHz | Up to 2400 MHz | Up to 2310MHz | Up to 2250MHz | Up to 2250MHz | Up to 2105MHz |
| ROPs | 192 | 192 | 128 | 128 | 128 | 96 |
| AMD Infinity Cache | 96MB | 80MB | 128MB | 128MB | 128MB | 128MB |
| Memory | 24GB GDDR6 | 20GB GDDR6 | 16GB GDDR6 18Gbps | 16GB GDDR6 16Gbps | 16GB GDDR6 | 16GB GDDR6 |
| Memory Bandwidth | 960 GB/s | 800 GB/s | 576 GB/s | 512 GB/s | 512 GB/s | 512 GB/s |
| Memory Interface | 384-bit | 320-bit | 256-bit | 256-bit | 256-bit | 256-bit |
| Board Power | 355W | 315W | 335W | 300W | 300W | 250W |
First, let’s take a fast have a look at the specs. The RDNA 3 structure has seen AMD transition to a chiplet-based design – a world first for a gaming GPU. We discover a 300mm² Graphics Compute Die, based mostly on TSMC’s 5nm node, flanked by six 37mm² Memory Cache Dies. In complete, the Navi 31 GPU packs 57.7 billion transistors.
Internally, the GCD make-up hasn’t been radically modified in comparison with what we noticed with RDNA 2. That means Navi 31 packs in 96 Compute Units, every of which homes 64 Steam Processors, for a complete of 6144 shaders. There’s additionally 96 Ray Accelerators – one per CU – and 192 ROPs.
As for clock pace, AMD has de-coupled the clocks, so the front-end and shaders can function at totally different clock speeds in a bid to avoid wasting energy. With the RX 7900 XTX, the shader clock encompasses a rated recreation clock of as much as 2300MHz, and a lift of as much as 2500MHz. PowerColoration has elevated this determine barely nevertheless, with the first BIOS working with a 2525MHz increase clock.
Meanwhile, the reminiscence configuration has taken a step ahead. The RX 7900 XTX packs 24GB of GDDR6 reminiscence clocked at 20Gbps, working over a 384-bit reminiscence interface, for complete reminiscence bandwidth of 960 GB/s. 96MB of Infinity Cache can also be current, which permits AMD to say an ‘efficient reminiscence bandwidth’ of as much as 3500 GB/s.
Power draw for the RX 7900 XTX is rated at 355W Total Board Power (TBP), although PowerColoration’s OC BIOS has elevated this barely as we are going to present later within the evaluation.
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