NVIDIA GeForce RTX 3080 vs NVIDIA GeForce RTX 5070 vs NVIDIA GeForce RTX 3080 Ti Laptop GPU

The Nvidia GeForce RTX 5070 is a fast desktop graphics card utilizing the GB205 chip based on the Blackwell architecture. The model offers 6144 CUDA cores, and 12 GB GDDR7 graphics memory with a 192-bit memory bus (672 GB/s). The base clock of the GPU (reference model) is specified at 2.16 GHz, while the boost clock can reach 2.51 GHz.

Architecture

Nvidia GeForce RTX 5070 features new Tensor (5th Gen) and RT-cores (4th Gen), with 988 AI TOPS and 94 TFLOPS performance respectively. Blackwell architecture is the first to feature the new DLSS 4 Multi Frame generation, which, thanks to enhanced AI capabilities can generate more frames per second while using less memory and delivering better picture quality. Nvidia also managed to improve the performance and output quality of DLSS, Frame Generation, and Ray Reconstruction features (also available for the previous RTX 4000 series). Additionally, the new models now support Reflex 2 low latency mode and Frame Warp.

Performance

Thanks to the new Tensor and RT-cores, as well as some bump in CUDA cores, the card is promised (by Nvidia) to offer as much as 2x better performance compared to the previous RTX 4070 (thanks to the new DLSS 4 MFG feature). According to Nvidia's presentation, the card can even reach the performance level of the RTX 4090. The RTX 5070 is expected to be among the faster graphics cards of 2025 and, presumably, will deliver good performance in games at high resolution.

Our own tests show that the card is 4% faster than the RTX 4070 Ti in the synthetic benchmarks and almost identical to the Radeon RX 7900XT in games (RTX 5070 is 1% slower at 4K, 1080p, and 2K). 

Power consumption

According to Nvidia, the GB205 chip is manufactured using the modern 4N FinFET process at TSMC and is specified with a TGP (Total Graphics Power) of 250 watts (50 W higher than RTX 4070). Nvidia now also specifies maximum GPU temperature, which is stated at 85 ℃ for RTX 5070. The model also requires at least 650W PSU.

The Nvidia GeForce RTX 3080 Ti Laptop GPU or 3080 Ti Mobile (for laptops, GN20-E8) is the fastest graphics card for notebooks in early 2022. It is based on the GA103S Ampere chip and offers 7,424 shaders and 16 GB GDDR6 graphics memory with a 256 Bit memory bus. It supports PCIe 4.0 and will be available in different variants (80 - 175 Watt TGP currently known). The maximum Boost clock can vary from 1125 (80 W) to 1590 MHz (150W and up).

There is no more Max-Q variant (formerly used for the low power variants) but every OEM can choose to implement Max-Q technologies (Dynamic Boost, Whispermode).

The performance depends on the TGP setting and cooling of the laptop. Thanks to the higher core count, the RTX 3080 Ti should be clearly faster than the old RTX 3080 Mobile and therefore well suited for 4K gaming.

The GA103S chip offers 7,424 FP32 ALUs of which half can also execute INT32 instructions (i.e. 3,712 INT32 ALUs). With Turing all shaders could still execute FP32 or INT32 instructions. The GA103S integrates 58 Raytracing cores and 232 Tensor cores (e.g., for DLSS). The L2 cache is 4 MB. The Ampere chips also include an improved 5th generation video encoder (NVENC for H.264 and H.265) and a 7th generation decoder (for various formats now including AV1). Compared to the GA103, the GA103S integrates only a 256 Bit memory bus.

The GA103S chip is manufactured by Samsung in 8nm (8N), which is not quite able to keep up with the 7nm node at TSMC (e.g. used by AMD and also for the professional GA100 Ampere chip).