ATI Radeon HD 4750

Launched in the Radeon R700 generation and built on TSMC’s 40 nm process, the ATI Radeon HD 4750 is an end-of-life, single-slot graphics card with a 100 W TDP and a 300 W suggested power supply. Its RV740 chip packs 826 million transistors on a 137 mm² die, yielding a transistor density of 6.0M / mm². The card features 640 shading units, 32 texture mapping units, and 16 raster output pipelines, with pixel and texture rates of 11.68 GPixel/s and 23.36 GTexel/s respectively. Peak FP32 performance stands at 934.4 GFLOPS. The card sits at the 50th percentile among all GPUs in the database, indicating a squarely mid-pack position in overall capability. Notably, the benchmark suite contains no entries and no nearest rivals, so all comparisons below rely solely on the card’s own specifications and its percentile ranking.

Benchmark Performance

The absence of benchmark scores in the FACT PACK means the HD 4750’s raw performance cannot be expressed as a delta percentage against any specific rival. However, the 50th percentile placement provides a meaningful anchor: half of all GPUs tracked in the database score lower, and half score higher. This is not a top-tier or enthusiast part; it is a mainstream card that lands exactly at the median of the entire GPU landscape at the time of its release. The FP32 throughput of 934.4 GFLOPS is the key computational metric here, and it aligns with the card’s mid-pack percentile — this is not a compute monster, but it is not a weakling either. The pixel rate of 11.68 GPixel/s and texture rate of 23.36 GTexel/s further reinforce a balanced, mid-range profile: fill-rate work is moderate, and the 16 ROPs are typical for a card of this class. Given the lack of rival scores, the most honest interpretation is that the HD 4750 delivers performance that would satisfy users at 720p-class resolutions in its era, but the data does not support claims of dominance or deficiency relative to named competitors. The 50th percentile itself is the only comparative benchmark signal available, and it suggests a card that trades blows with the broad middle of the market.

Who Should Consider It

Based strictly on the available metrics, the HD 4750 is suited for users running games at modest resolution and detail settings. The 512 MB GDDR5 frame buffer, paired with a 128-bit bus and 51.20 GB/s bandwidth, places a hard ceiling on texture-heavy workloads and high-resolution assets. At 720p-class output, the 640 shading units and 23.36 GTexel/s texture rate could handle older titles or less demanding e-sports-style games at medium presets, but the 11.68 GPixel/s pixel rate and 16 ROPs would struggle with high-detail anti-aliasing or large draw distances. For 1080p-class gaming, the 512 MB VRAM is a limiting factor; modern (for its time) AAA releases would likely require reduced texture quality and lower shadow settings to stay within memory bounds. The card’s 100 W TDP and single 6-pin power connector mean it is also an option for users with modest power supplies, provided that the system draws no more than the 300 W suggested PSU rating. Users who prioritize low power draw and compact single-slot installation over raw frames per second would find the HD 4750 acceptable for legacy gaming or as a basic display output card. Conversely, anyone targeting high refresh rates or high-detail 1080p gameplay should look elsewhere — the data indicates this card is not built for that workload.

Memory Subsystem

The HD 4750 comes equipped with 512 MB of GDDR5 memory, a type that was cutting-edge for its generation, but the capacity is small by modern standards. The memory operates at 800 MHz, translating to 3.2 Gbps effective data rate. The 128-bit bus width, combined with that effective rate, yields a total bandwidth of 51.20 GB/s. This bandwidth figure is modest — it is sufficient for 720p-class rendering and light 1080p work, but it becomes a bottleneck when textures exceed the 512 MB pool. In high-resolution scenarios, the card would have to constantly swap data between the frame buffer and system memory via the PCIe 2.0 x16 interface, which severely hampers performance. The 16 ROPs also limit how quickly pixel data can be written back to memory, further constraining high-resolution output. For users pushing beyond 720p, the memory subsystem is clearly the weak link: 512 MB was small even for 2009-era games, and the 51.20 GB/s bandwidth cannot feed the 640 shading units at high resolutions. The 3.2 Gbps effective memory speed is respectable for GDDR5 of that era, but the narrow 128-bit bus halves the potential throughput compared to wider-memory cards. In short, the memory subsystem dictates that this card is best used at low resolutions where the 512 MB pool and 51.20 GB/s bandwidth are not overwhelmed.

How It Compares

The FACT PACK lists no nearest rivals, so a direct numerical comparison against other specific GPUs is impossible. The only comparative data point is the 50th percentile rank. This means the HD 4750 sits exactly at the median of all GPUs in the database — no better, no worse. In practical terms, this suggests it would outperform lower-end cards (those below the 50th percentile) in raw compute and fill rate, while being outclassed by the upper half of the market. The 934.4 GFLOPS FP32 figure gives a sense of scale: it is roughly a quarter of what high-end cards of the same era would deliver, but double what entry-level parts offered. The 23.36 GTexel/s texture rate and 11.68 GPixel/s pixel rate follow the same pattern — mid-tier numbers that do not embarrass the card but do not threaten faster products. Without named rivals, the comparison must remain qualitative: this is a card that sits in the middle of the pack, offering balanced, unremarkable performance. Users upgrading from an older integrated or entry-level discrete GPU would notice a solid improvement; users coming from a higher-tier card would see a step down.

Ray Tracing and Feature Set

The HD 4750 has no dedicated ray tracing cores and no tensor cores, as those technologies did not exist in the TeraScale architecture. The card is built on the older TeraScale design, which relies entirely on the 640 unified shading units for all graphics and compute work. In terms of API support, the card offers DirectX 10.1 (specifically the 10_1 feature level) and OpenGL 3.3. It does not support Vulkan, which means modern titles that require Vulkan will not run. DirectX 10.1 was an incremental update over 10.0, adding features like improved shader model 4.1 and better alpha-to-coverage, but it lacks the tessellation and compute shader features that arrived with DirectX 11. This places the HD 4750 firmly in the pre-DirectX-11 era, limiting its compatibility with games released after 2009 that assume DirectX 11 hardware. Ray tracing is entirely out of the question — the hardware lacks the requisite cores, and the API support does not include any ray tracing extensions. The feature set is further constrained by the display outputs: 2x DVI and 1x S-Video, with no HDMI or DisplayPort, so connecting to modern monitors may require adapters. The card’s 40 nm process and 100 W TDP are the only modern-ish aspects, but the lack of Vulkan and DirectX 11 support means it is effectively obsolete for contemporary gaming. The 3.2 Gbps GDDR5 memory is a bright spot, but it cannot compensate for the missing architectural features. Overall, the HD 4750 is a legacy product that supports only older APIs and has no ray tracing or AI-accelerated features whatsoever.