Gaming PC

AMD Announces Ryzen Mobile 7045 HX-Series CPUs, Up to 16-Cores and 5.4 GHz for Laptops

Many companies such as Razer offer “desktop” alternatives in the form of very high-end and powerful gaming laptops, but the silicon inside them should provide a similar level of performance. It should not only be present, but also efficient. AMD CEO Dr. Lisa Su said in her opening keynote at CES 2023 that with high-end mobile processors arriving at least once a year, Zen, the high-end desktop replacement laptop space announced the latest version of AMD’s Ryzen mobile offering for 4-based Ryzen 7045HX series.

With four SKU stacks ranging from 16 cores to 6 cores, AMD has high performance mobile parts for all gaming notebooks and high performance laptops. Leading the way is the AMD Ryzen 9 7945HX, which boasts 16 cores and 32 threads with an incredible boost frequency of 5.7 GHz, all with a configurable TDP of 55-75 W+. AMD has three Ryzen 7045HX series processors including the Ryzen 9 7845HX, a 12 core/24 thread part, the 8 core/16 thread Ryzen 7 7745HX and the hex core AMD Ryzen 5 7645HX.

AMD Ryzen 7045HX Processor: Zen 4 Goes High-End Mobile (Dragon Range)

Among the multiple silicon-based announcements from AMD, perhaps the most interesting is the AMD Ryzen 7045HX series announcement for high-end laptops and notebooks. AMD has stepped up to a small arsenal of new Zen 4-based chips capable of delivering very high-end performance levels to enthusiasts and gamers on the go.

The AMD Ryzen 7045 series will be based on the same TSMC 5nm node as the Ryzen 7000 desktop lineup, but it’s much more difficult to design a laptop cooler than a tower air cooler or an AIO system. With that in mind, AMD’s 7045HX series would feature a 55-75 W+ TDP, a jump from the previous Zen 3 mobile flagship CPU, the Ryzen 9 6980HX. Another improvement comes from the larger level cache (L3 cache to be exact).

AMD has equipped the Ryzen 9 7045HX series with the same 64MB of L3 cache as their desktop CPUs, which should improve overall gaming performance when conditions permit. Both the announced Ryzen 7 and Ryzen 5 7045HX models feature 32MB of L3 cache which is 2.6x that of the Ryzen 6000 mobile series.

AMD Ryzen 7045 HX Mobile CPU
at 6nm
anand tech core/thread base
Frequency (MHz)
Frequency (MHz)
L3 cache
Risen 9 7945HX 16/32 2500 5400 64 55-75W or more
Ryzen 9 6980HX 8/16 3300 5000 16 45W+
Risen 9 6900HX 8/16 3300 4900 16 45W+
Risen 9 7845HX 8/16 3600 5100 64 45 to 75W or more
Ryzen7 6800HS 8/16 3200 4700 12 35W
Ryzen 7 7745HX 8/16 3300 4500 32 45 to 75W or more
Ryzen 5 7645HX 6/12 3300 4500 32 45 to 75W or more

Looking at the specifications of the Ryzen 7045HX series processors, AMD has not revealed all these details at the moment. Still, there’s plenty to go on, including, among other things, AMD’s in-house performance claims compared to the previous generation. . AMD uses a desktop Ryzen chiplet-based design with two 8-core CCDs and a central IOD.There is 64 MB of L3 cache available for the processor, and AMD’s TDP rating limits the power from 55W to 75W. W and above.

Below the flagship 7945HX is the Ryzen 9 7845HX which uses 8 Zen cores and 16 threads and opting for half the core count means more power is available. increase. This translates to a faster base frequency of 3.6 GHz and a boost frequency of up to 5.1 GHz. It has a slightly lower TDP of 45-75W and the same 64MB L3 cache. On the 16-core part, AMD claims the Ryzen 7945HX is up to 78% faster in CineBench nT and 18% faster in single-core tests.

The Ryzen 7 7745HX is also an 8C/16T part but with slower clock speeds, including a base frequency of 3.3 GHz and a more modest boost frequency of 4.5 GHz. It also features half of his L3 cache on the Ryzen 9 variant, with 32 MB of L3 cache available at the core. Serving as the entry-level Ryzen 7045HX series SKU is the Ryzen 5 7645HX. It has the exact same specs as the Ryzen 7 7745HX, with the same base and boost frequencies and the same 32MB of L3 cache. The big difference is that the Ryzen 7 7745HX is not an octa-core chip, but a 6-core 12-thread part.

In terms of GPU performance, these are all based on AMD’s desktop Ryzen 7000 parts and thus include an integrated RDNA2 based GPU. However, the modest 2 CU configuration that AMD uses there is good enough for basic desktop work, but not much more. So these parts don’t hold a candle in terms of performance compared to AMD’s truly mobile-focused Phoenix silicon which offers up to 12 CUs of RDNA3 graphics. It shouldn’t come as a surprise to say that they are meant to be paired with discrete GPUs for computer-intensive work. It has a GPU.

From AMD’s internal tests directly comparing the Ryzen 9 7945HX (16C/32T) to its predecessor, the Ryzen 9 6900HX (8C/16T), AMD has 29% better framerates in Far Cry 6, CS: GO, and League of Legends up to 62% better performance. We generally don’t put much weight on these performance claims, but it’s always a good indicator of how far we can expect performance levels to drop.

The AMD Ryzen 7045HX series is expected to begin shipping models sometime in February, with three models already announced through AMD. These include the ASUS Strix and Lenovo Legion which are expected to feature the Ryzen 9 7945HX model. Also coming soon are AMD Advantage laptops. This means it will have a mix of AMD CPUs and discrete graphics, and will be available via the Alienware m16 and m18.

A number of new laptops and notebooks are expected to be announced in the coming days and weeks, powered by AMD’s Ryzen 7045HX series.

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