China is a rather specific market that often has its own rules. This is especially evident when we look at the range of graphics cards offered on Chinese platforms. At one time we could buy NVIDIA GeForce RTX 20 and 30 series mobile systems (laptop GPUs) there, which were sold in the form of desktop graphics cards. Now the situation is almost the same, although newer NVIDIA drives were used.
The Chinese market offers “RTX 4080M” and “RTX 4090M” graphics cards, which are based on mobile systems used in laptops. They can be purchased at a lower price, but the solution is not without drawbacks.
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This situation should not surprise anyone today, since so far we have seen similar solutions quite often in China. Currently, all the attention of the “manufacturers” is focused on two systems known from gaming laptops, namely the NVIDIA GeForce RTX 4080 laptop GPU and the RTX 4090 laptop GPU. They are equally sold under the names “RTX 4080M” and “RTX 4090M”. Their designs are quite simple and are based on two fans. What encourages you to buy them is their price, after all, the purchase amount for “RTX 4080M” ranges from $420 to $560. In turn, the performance of this variant is between the NVIDIA GeForce RTX 4070 and RTX 4070 Ti graphics cards. The situation is a little worse in the case of the “RTX 4090M”, because there is currently only one offer on the Internet with a significantly higher price – this will probably change over time.
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Looking at the tables below you can easily see that both editions of the “GPU Laptop” systems in question are slightly limited compared to their desktop counterparts. Naturally, the main limitation here will be power consumption, which is set at 175 W. In practice, such modified graphics cards turn out to be problematic, if only due to the appearance of the appropriate drivers. Many users have already reported that such solutions do not work properly. Furthermore, there are many models of graphics cards on the market that are sold under different brands (usually more expensive graphics systems), but contain completely different graphics processors. It is not worth taking the risk or even considering purchasing such units.
NVIDIA GeForce RTX 4090 NVIDIA GeForce RTX 4080 Architecture Ada Lovelace Ada Lovelace Graphics Chip AD102-300 AD103-300 Lithography TSMC “4N” TSMC “4N” Number of Transistors 76.3 billion 45.9 billion Area 609 mm² 379 mm² SM Blocks 128 76 SP Drive 16384 9728 Power FP32 82.58 TFLOPS 48.74 TFLOPS RT Core 128 RT 3rd Gen 76 RT Tensor 3rd Gen Core 512 Tensor 4th Gen 304 Tensor 4th Gen TMU Drive 512 304 ROP Drive 176 112 Base Clock 2235 MHz 2205 MHz GPU Boost 2520 MHz Clock 250 5 MHz VRAM Bandwidth 21 Gbps 22.5 Gbps 24 GB GDDR6X VRAM Memory 16 GB GDDR6X Memory Bus 256-bit 384-bit Bandwidth Up to 1008 GB/s Up to 716.8 GB/s PCIe Compatibility PCIe 4.0 x16 PCIe 4.0 x16 TDP (Base) 450 W 320 W TDP (Max) 660 W 516 W DLSS 3 Support with FG Yes Yes NVIDIA GeForce RTX 4090 Laptop GPU NVIDIA GeForce RTX 4080 Laptop GPU Ada Architecture Lovelace Ada Lovelace Graphics Chip AD103 AD104 Lithography TSMC 4N TSMC 4N Area 379 mm² 294 mm² Transistors 45.9 billion 35.8 billion SM Blocks 76 58 SP Units 9728 7424 TMU Units 304 232 ROP Units 112 80 RT Units 76 (3rd. gen) 58 (3rd generation) Tensor unit 304 (4th generation) 232 (4th generation) Base clock 1335 MHz 1290 MHz Boost Clock 1695 MHz 1665 MHz Memory 16 GB GDDR6 (up to 18 Gbps) 12 GB GDDR6 (up to 18 Gbps) Memory Bus 256 bit Bandwidth 192 bit Up to 576 GB/s Up to 432 GB/s DLSS 3 Support with FG Yes Yes TGP Ratio Up to 175 W (150 W + 25 W Dynamic Boost) Up to 175 W (150 W + 25W Dynamic Boost)
Source: WCCFTech, VideoCardz
2024-01-22 19:30:00
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