AMD Ryzen 7 4700GE desktop APU tests reveal reduced memory latency and great overclocking potential
Chinese reviewer TecLab managed to get hold of an engineering sample for the Ryzen 7 4700GE desktop APU that is supposed to launch in July. Unfortunately, the reviewer does not provide extensive test results except for an Aida Cache and Memory benchmark. Still, this test reveals the performance potential unlocked by the monolithic design that uses the latest iteration of AMD’s Infinity Fabric package.
CPU-Z info points out that the engineering sample of the Ryzen 7 4700GE features 8 cores and 16 threads running at 3 GHz base with 4 GHz boost. However, all test results have been achieved with a 4.3 GHz boost clock, so it looks like the chip can sustain quite a bit of overclocking. Additionally, the APU includes a Vega 8 GPU with 512 steam processors running at 2 GHz. The entire package is rated for 35 W TDP.
For the actual test, TecLab used an Asus ROG STRIX B550-E Gaming motherboard in conjunction with 2x 8 GB DDR4 RAM sticks running at 4333 MHz with CL14 timings and an AIO water cooler. The results are pretty much in line with what we would expect from DDR4 RAM running at these speeds, but the test actually proves that the Infinity Fabric can stably run at 2166 MHz and can potentially be pushed to 2200 MHz. Another important aspect is the memory latency which appears to be under 50 ns (down to 45 ns in best case scenarios). This is an excellent improvement considering that last year’s Ryzen 3000 APUs can typically yield latencies in the 60’s. The Ryzen 7 4700G with 65 W TDP is expected to push the memory frequencies even further to around 5400 MHz.
The increased memory bandwidth and lower latencies should also improve the Vega 8 iGPU performance, since these systems do not get separate VRAM and rely on system RAM.