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Alongside our launch day review of the new Nvidia RTX 4080 Super Founders Edition, we also have a couple of partner cards in for testing. The Palit JetStream OC is one such model, featuring a stealthy matte black design, triple-fan cooler and factory overclocked core. Clearly designed to deliver a ‘no frills' experience, this GPU is targeting the £959 MSRP, so let's find out what it can bring to the table.
We've only just taken a look at Palit's RTX 4070 Super JetStream OC, and the RTX 4080 Super JetStream OC carries on in the same vein, eschewing extra bells and whistles like RGB lighting and Dual-BIOS in favour of a simpler approach. That helps it hit the £959 MSRP, but let's put it through its paces and find out just how it performs.
| RTX 4090 | RTX 4080 Super | RTX 4080 | RTX 4070 Ti Super | RTX 4070 Ti | |
| Process | TSMC N4 | TSMC N4 | TSMC N4 | TSMC N4 | TSMC N4 |
| SMs | 128 | 80 | 76 | 66 | 60 |
| CUDA Cores | 16384 | 10240 | 9728 | 8448 | 7680 |
| Tensor Cores | 512 | 320 | 304 | 264 | 240 |
| RT Cores | 128 | 80 | 76 | 66 | 60 |
| Texture Units | 512 | 320 | 304 | 264 | 240 |
| ROPs | 176 | 112 | 112 | 96 | 80 |
| GPU Boost Clock | 2520 MHz | 2550 MHz | 2505 MHz | 2610 MHz | 2610 MHz |
| Memory Data Rate | 21 Gbps | 23 Gbps | 22.4 Gbps | 21 Gbps | 21 Gbps |
| L2 Cache | 73729 KB | 65536 KB | 65536 KB | 49152 KB | 49152 KB |
| Total Video Memory | 24GB GDDR6X | 16GB GDDR6X | 16GB GDDR6X | 16GB GDDR6X | 12GB GDDR6X |
| Memory Interface | 384-bit | 256-bit | 256-bit | 256-bit | 192-bit |
| Memory Bandwidth | 1008 GB/Sec | 736 GB/Sec | 716.8 GB/Sec | 672 GB/Sec | 504 GB/Sec |
| TGP | 450W | 320W | 320W | 285W | 285W |
First, a quick spec recap. Unlike the RTX 4080 and RTX 4070 Ti which use cut-down versions of the AD103 GPU, the new 4080 Super is a full implementation of AD103 silicon, with the die measuring in at 379mm2. This means the RTX 4080 Super offers a total of 80 Streaming Multiprocessors (SMs), each housing 256 CUDA Cores, for a total of 10240. We also find 80 RT cores, 320 Tensor cores, 320 Texture Units, and 12 ROPs.
TSMC's N4 node has Nvidia cranking up the clock speed significantly this generation, with the RTX 4080 Super sporting a 2550MHz rated boost. That's 45MHz faster than the rated clock speed of the RTX 4080, though Palit has added an extra 25MHz on top.
The memory configuration is almost identical to the RTX 4080, too. The 4080 Super comes equipped with a 256-bit memory interface, paired with 16GB GDDR6X running at 23Gbps, putting total memory bandwidth at 736 GB/s. L2 cache remains unchanged at 65536KB.
Considering the slightly increased core-count, it's interesting that power draw remains the same as the RTX 4080, with the new Super model still boasting a 320W TGP. This is something we focus on closely in this review, using our enhanced GPU power testing methodology, so read on for our most detailed power and efficiency testing yet.
