The AMD Ryzen 9 7900, Ryzen 7 7700, and Ryzen 5 7600 Review: Zen 4 Efficiency at 65 Watts

The AMD Ryzen 9 7900, Ryzen 7 7700, and Ryzen 5 7600 Review: Zen 4 Efficiency at 65 Watts,The AMD Ryzen 9 7900, Ryzen 7 7700, and Ryzen 5 7600 Review: Zen 4 Efficiency at 65 Watts

The AMD Ryzen 9 7900, Ryzen 7 7700, and Ryzen 5 7600 Review: Zen 4 Efficiency at 65 Watts

In Q3 of last year, AMD released the first CPUs based on its highly anticipated Zen 4 architecture. Not only did their Ryzen 7000 parts raise the bar in terms of performance compared with the previous Ryzen 5000 series, but it also gave birth to AMD's latest platform, AM5. Some of the most significant benefits of Zen 4 and the AM5 platform include support for PCIe 5.0, DDR5 memory, and access to the latest and greatestof what's available in controller sets.

While the competition at the higher end of the x86 processor market is a metaphorical firefight with heavy weaponry, AMD has struggled to offer users on tighter budgets anything to sink their teeth into. It's clear Zen 4 is a powerful and highly efficient architecture, but with the added cost of DDR5, finding all of the components to fit under tighter budget constraints with AM5 isn't as easy as it once was on AM4.

AMD has launched three new processors designed to offer users on a budget something to get their money's worth, with performance that make them favorable for users looking for Zen 4 hardware but without the hefty financial outlay. The AMD Ryzen 9 7900, Ryzen 7 7700, and Ryzen 5 7600 processors all feature the Zen 4 microarchitecture and come with a TDP of just 65 W, which makes them viable for all kinds of users, such as enthusiasts looking for a more affordable entry-point onto the AM5 platform.

Of particular interest is AMD's new entry-level offering for the Ryzen 7000 series: the Ryzen 5 7600, which offers six cores/twelve threads forentry-level builders looking to build a system with all of the features of AM5 and the Ryzen 7000 family, but at a much more affordable price point.We are looking at all three of AMD's new Ryzen 7000 65 W TDP processors to see how they stack up against the competition, to see if AMD's lower-powered, lower-priced non-X variants can offer anything in the way of value for consumers. We also aim to see if AMD's65 W TDP implementation can shine onTSMC's 5 nm node process with performance per watt efficiency that AMD claims is the best on the market.

Over the last year, since AMD unveiled its Zen 4 core, we'vepublished severalcolumn inches on themicroarchitecture, Ryzen 7000 processors, and the AM5 platform. Below is a list of our detailed Raphael (Zen 4) and Ryzen 7000 coverage:

AMD Zen 4 Ryzen 9 7950X and Ryzen 5 7600X Review: Retaking The High-End
AMD's Desktop CPU Roadmap: 2024 Brings Zen 5-based "Granite Ridge"
Updated AMD Notebook Roadmap: Zen 4 on 4nm in 2023, Zen 5 By End of 2024
AMD Zen 4 Update: 8% to 10% IPC Uplight, 25% More Perf-Per-Watt, V-Cache Chips Coming

Ryzen 9 7900, Ryzen 7 7700, Ryzen 5 7600, 65 W TDP from $229

Focusing on the latest65 W-based Ryzen 7000 series processors, AMD is looking to offer better value throughout its series in addition to the various price drops on its X-class Zen 4 chips across the board. The new Ryzen 7000 non-X series chips are available across multiple configurations and price points, some of which show better power efficiency against previous generations of its processors and the decision to go back tobundlingsuitable coolers for even more value.

In contrast to AMDs top X-series SKUs, which require competent cooling due to the higher power consumption and higher thermal pressure placed on the IHS, the new 65 W models are designed with efficiency and performance per watt in mind. All of which is intended to make them (more) viable options for all types of system builders. To account for the lower TDP compared with the X-series SKUs, AMD has lowered their clockspeed expectations for these new SKUs. The boost clocks are still fairly high, reflecting what the silicon can do in lighter workloads; but the official base frequency clock speeds have been more significantly cut in order to keep the chips' power usage under control in more heavily multi-threded scenarios.

AMD Ryzen 7000 Series Line-Up
AnandTech	CoresThreads	BaseFreq	TurboFreq	MemorySupport	L3Cache	TDP	PPT	MSRP
Ryzen 9 7950X	16C / 32T	4.5 GHz	5.7 GHz	DDR5-5200	64 MB	170 W	230 W	$699

Ryzen 9 7900X	12C / 24T	4.7 GHz	5.6 GHz	DDR5-5200	64 MB	170 W	230 W	$549
Ryzen 9 7900	12C / 24T	3.6 GHz	5.4 GHz	DDR5-5200	64 MB	65 W	88 W	$429

Ryzen 7 7700X	8C / 16T	4.5 GHz	5.4 GHz	DDR5-5200	32 MB	105 W	142 W	$399
Ryzen 7 7700	8C / 16T	3.6 GHz	5.3 GHz	DDR5-5200	32 MB	65 W	88 W	$329

Ryzen 5 7600X	6C / 12T	4.7 GHz	5.3 GHz	DDR5-5200	32 MB	105 W	142 W	$299
Ryzen 5 7600	6C / 12T	3.8 GHz	5.1 GHz	DDR5-5200	32 MB	65 W	88 W	$229

Starting with the top 65 W SKU from AMD, the Ryzen 9 7900 has twelve Zen 4 cores with a maximum boost clock speed of up to 5.4 GHz. In addition, it shares the same 64 MB L3 cache as the Ryzen 9 7950X and Ryzen 9 7900X, but with a TDP over 100 Watts lower than the flagship model. The Ryzen 9 7900 is designed for content creators, gamers, and enthusiasts looking for a more affordable option.

Directly comparing the Ryzen 9 7900 to the Ryzen 9 7900X, the 65 W variant has a base clock speed of 3.6 GHz, which is a drop of around 23% compared to its X-series sibling. On the other hand, the boost clock speeds are much more similar, with a 5.4 GHz boost frequency on the Ryzen 9 7900, making things more palatable for enthusiasts.

AMD Ryzen 9 7900 12-core/24-thread processor in CPU-Z

The 61% drop in TDP between the Ryzen 9 7900 (65 W) and Ryzen 9 7900X (170 W) may pose some questions surrounding raw performance throughput. Certainly, the 7900 is going to see lower performance in heavily multi-threaded workloads; you still need a lot of power to light up a dozen Zen 4 cores at 5GHz+. The up side to this, however? Having a lower TDP makes it more viable in systems with space constraints. Not only this, but it also means it's easier to coolandalleviates some budget needed for purchasing a high-end cooler, which could be spent on faster DDR5 memory, storage, or discrete graphics.

Moving down the stack to the Ryzen 7 series, the Ryzen 7 7700 has the same core and thread count as the existing Ryzen 7 7700X, but with a 100 MHz hit to boost clock speeds. Meanwhile there's thebase frequency of 3.6 GHz, which does constitute a drop in raw frequency of 900 MHz. Other features include a total cache of 40 MB, 32 MB of L3 cache, and 8 MB of L2 cache.

Overall, the Ryzen 7 7700 sees a 40 W drop in TDP versus its 105 TDP of its X-series counterpart, which is notably smaller than the drop on the 7900 parts. So the Zen 4 hardware isn't being asked to give up quite as much performance headroom here.

Slide from AMD's Ryzen 7000 65 W Slide Deck: Performance-Per-Watt is the focus

The final SKU from AMD's Ryzen 7000 65 W offerings is the Ryzen 5 7600. The Ryzen 5 7600 is the entry-level model of AMD's latest high-performanceAM5 platform, with six cores and a maximum boost clock speed of 5.1 GHz. It shares many of the characteristics of the Ryzen 5 7600X, including 32 MB of L3 cache with 6 MB of L2 cache; this is 1 MB per core which is a benefit of Zen 4 over the 512 KB of L2 cache per core on Zen 3. The other benefit is the price, of which the Ryzen 5 7600 is very attractive, with an entry-level price of $229, down from the $299 MSRP (and $269 street price) of the 7600X. This allows users looking to opt for a Zen 4 and TSMC 5 nm processoran even more affordable option to consider opting for.

Like the rest of the Ryzen 7000 family, all three of the new 65 W SKUs also include an integrated GPU made of two RDNA2-based CUs, in order to provide basic levels of integrated graphics. While more than satisfactory for simple desktop needs, these shouldn't be confused with having the same levels of graphical power as their Ryzen series of APUs.